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Giúp em dịch đề thôi ạ
Problem 1
The median of the list
d10f097a36839fb6dffa8048cecfed506242abb2.png
is
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
. What is the mean?
51e9c99f2ad890af6808cd8dfcb4f64336058e69.png

Problem 2A number
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
is
41c544263a265ff15498ee45f7392c5f86c6d151.png
more than the product of its reciprocal and its additive inverse. In which interval does the number lie?
52af659f38c35cf5ff52f8880c0260459885a589.png

Problem 3The sum of two numbers is S.Suppose
7cde695f2e4542fd01f860a89189f47a27143b66.png
is added to each number and then each of the resulting numbers is doubled. What is the sum of the final two numbers?
a27df0f19e222fc4ed6214e378cd7dcb1c8947fa.png

Problem 4What is the maximum number for the possible points of intersection of a circle and a triangle?
581f82e14d3eb0a92f76bbd1bb744a45cf9630d5.png

Problem 5How many of the twelve pentominoes pictured below have at least one line of symmetry?
082aa547e6b283dd68e0d1c407fbe9b93aeb0eca.png

293cd11a98da59cb7da96ee246c91c550067a300.png

Problem 6Let
7dfd17dc4d3100462df726e8eb7f9262783429eb.png
and
0965bf432b818b46740e3cd4d042899628c7ad0e.png
denote the product and the sum, respectively, of the digits of the integer
174fadd07fd54c9afe288e96558c92e0c1da733a.png
. For example,
ea96f4c531e5b193f859f481988c8953cde81939.png
and
fa0bebe4e25d4918ad64cff9a1eb013dea1bd3f4.png
. Suppose
fc97ef67268cd4e91bacdf12b8901d7036c9a056.png
is a two-digit number such that
cd8df94ec880442775474c8e3bd36420b51d5095.png
. What is the units digit of
fc97ef67268cd4e91bacdf12b8901d7036c9a056.png
?
ec3fe1362b23ee3e01f8a613316eb179020e4ea8.png

Problem 7When the decimal point of a certain positive decimal number is moved four places to the right, the new number is four times the reciprocal of the original number. What is the original number?
812548feb1df5977a5245259e71e01f7ad8c05e0.png

Problem 8Wanda, Darren, Beatrice, and Chi are tutors in the school math lab. Their schedule is as follows: Darren works every third school day, Wanda works every fourth school day, Beatrice works every sixth school day, and Chi works every seventh school day. Today they are all working in the math lab. In how many school days from today will they next be together tutoring in the lab?
4d6dfdd92e666c692141034382b47518424e4c12.png

Problem 9The state income tax where Kristin lives is levied at the rate of
03f019000e7e4e14a3379d05327eb7db704d2897.png
of the first
1022a86171de46c86dd317ad366816e7d7edf63d.png
of annual income plus
82c54da3bbd9f3448135f7866095245ba3c68890.png
of any amount above
1022a86171de46c86dd317ad366816e7d7edf63d.png
. Kristin noticed that the state income tax she paid amounted to
af0e6223309402c06e4e856b92dfe88bdb235f7b.png
of her annual income. What was her annual income?
76b56ec7a825497ea360626adcbc7f3481bdaacf.png

Problem 10If
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
,
092e364e1d9d19ad5fffb0b46ef4cc7f2da02c1c.png
, and
b13f21416d84e13708696f34dea81026cda583c9.png
are positive with
20b494039a8b1aae0848c4e26c5fc485024d1882.png
,
acf0d9d8f29ea837ac4e09a65101fc401d1c8a0d.png
, and
96ac9f4f9efa577f7a1e01024901bf845be42189.png
, then
7dc8ba1464f944e344427a3009f6db3f0e272247.png
is
79d9442c8d40b147b0afb1d5e9106c618b69e565.png

Problem 11Consider the dark square in an array of unit squares, part of which is shown. The first ring of squares around this center square contains
8455f3b5cb3b4880b8c9d782a5c1f0334db819eb.png
unit squares. The second ring contains
9a5b4928c8fe50ce3c2428da3bee3505e891b788.png
unit squares. If we continue this process, the number of unit squares in the
860388333a1c7a8db1269beb5138c35d9a784412.png
ring is
7269089b676271f1087ffe21850814e43248041d.png

2eb99088741dd698404f7689b9f9e8fef645219b.png

Problem 12Suppose that
174fadd07fd54c9afe288e96558c92e0c1da733a.png
is the product of three consecutive integers and that
174fadd07fd54c9afe288e96558c92e0c1da733a.png
is divisible by
e0a0db32027a732ac57d37ef2ae9bb150f65b108.png
. Which of the following is not necessarily a divisor of
174fadd07fd54c9afe288e96558c92e0c1da733a.png
?
581f86f7c5d8ba57ce9b07f201e6efc2afd18602.png

Problem 13A telephone number has the form
ebb45fc71293503af7e3475c08587915917557cb.png
, where each letter represents a different digit. The digits in each part of the numbers are in decreasing order; that is,
74c3286b4dd93a22276e3b98e142a26416d6f21d.png
,
aa45904a25d5c070d3c62afad39e54e646ab1474.png
, and
643a817d036c40acee6b19568fd1ccdbc7831867.png
. Furthermore,
9ffb448918db29f2a72f8f87f421b3b3cad18f95.png
,
fa2fa899f0afb05d6837885523503a2d4df434f9.png
, and
a055f405829e64a3b70253ab67cb45ed6ed5bb29.png
are consecutive even digits;
6e28ce12d49d39f160d5a0ef54077fc98e4b9d2b.png
,
b1902d279ba37d60bdce4e0e987b7cd19d48974e.png
,
027f4a11d6090f9eac0ce2488df6384dad1263ea.png
, and
abb5588023cfa1ac14643e9778699f03eecc57a3.png
are consecutive odd digits; and
0ce34505b60a57420d2704b5b129a501ce25fa66.png
. Find
019e9892786e493964e145e7c5cf7b700314e53b.png
.
96227966e4c241c8c190e5e72137304572ca8003.png

Problem 14A charity sells
0b51850ccd3440214d4ccfbc14d29b2a31bfda55.png
benefit tickets for a total of
6d0bfc6b0c5072b8b3fd97f17a3099767fb74714.png
. Some tickets sell for full price (a whole dollar amount), and the rest sells for half price. How much money is raised by the full-price tickets?
395bf11b97b28abc01df245e90239631b541ecc8.png

Problem 15A street has parallel curbs
78792fe4680a164f537ea72a4f900e4471433c3b.png
feet apart. A crosswalk bounded by two parallel stripes crosses the street at an angle. The length of the curb between the stripes is
f1965fae079a9ba2c0726c307070c2355dfcb213.png
feet and each stripe is
906734e2f1010e9a171ffee8050cbc0649cea37c.png
feet long. Find the distance, in feet, between the stripes?
b47ad13b1f37b6acff27f2cc8780ab147c4500bc.png

Problem 16The mean of three numbers is
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
more than the least of the numbers and
f1965fae079a9ba2c0726c307070c2355dfcb213.png
less than the greatest. The median of the three numbers is
79069377f91364c2f87a64e5f9f562a091c8a6c1.png
. What is their sum?
8afe07970343b95aa9eabdf5b156cb45e40b4879.png

Problem 17Which of the cones listed below can be formed from a
60c74a9907b4138b1a713afe48b3f102933c1296.png
sector of a circle of radius
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
by aligning the two straight sides?
c138162f10356b232effb334d98739899ee343c7.png

315562413720809cfd98e23e1e117251b751491e.png
84c383343484ac281d88d1411a50b6924418c840.png
ca0d9c40e534b1f263d23e3d22a8871343cb067a.png
680cb7791f9aa8d02d60098e9bb1811b4a21cbf2.png
007a065a8841a315f14be249a8582a5adf767cae.png

Problem 18The plane is tiled by congruent squares and congruent pentagons as indicated. The percent of the plane that is enclosed by the pentagons is closest to
Problem 19Pat wants to buy four donuts from an ample supply of three types of donuts: glazed, chocolate, and powdered. How many different selections are possible?
d8e1e6f99a84e3cd080fe1fb0fcbea0493721267.png

Problem 20A regular octagon is formed by cutting an isosceles right triangle from each of the corners of a square with sides of length
05f1ffc8a6829f25b0b0366087a70dfd4e06fef6.png
. What is the length of each side of the octagon?
839a243410560ec1f6a421453ff88875f4596bd3.png

Problem 21A right circular cylinder with its diameter equal to its height is inscribed in a right circular cone. The cone has diameter
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
and altitude
edf074831eb5bc9e61d6d6e09f525a86e3068f6a.png
, and the axes of the cylinder and cone coincide. Find the radius of the cylinder.
f1865b40e1bdd0d0ac7d74f4f60fc0cb13fe0806.png

Problem 22In the magic square shown, the sums of the numbers in each row, column, and diagonal are the same. Five of these numbers are represented by
a9f23bf124b6b2b2a993eb313c72e678664ac74a.png
,
9ee4b825a2e36ae093ed7be5e4851ef453b34914.png
,
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
,
092e364e1d9d19ad5fffb0b46ef4cc7f2da02c1c.png
, and
b13f21416d84e13708696f34dea81026cda583c9.png
. Find
1a2a699e959784ed2e68750f5930d7923507a18c.png
.
2532d437cfd7f680f89bb522226071209a6572ff.png

4e24d4a82884d1873aa08b1502e6996d8292e7ed.png

Problem 23A box contains exactly five chips, three red and two white. Chips are randomly removed one at a time without replacement until all the red chips are drawn or all the white chips are drawn. What is the probability that the last chip drawn is white?
2f28ae49acba82276e44b41118ca6b3b842d07dd.png

Problem 24In trapezoid
f9efaf9474c5658c4089523e2aff4e11488f8603.png
,
840e2b592390eb6ec918fa6f3292716ce170de66.png
and
ce0bfc603f9a044e308b1a1fdadca917e81ad2dd.png
are perpendicular to
cfbb4c52e011ceed6e813118a7d59e931af444a2.png
, with
f785633423e813360abedae2e8e10ae63769f9a9.png
,
Problem 25How many positive integers not exceeding
de7e2da81334aad3aeeb09706fed72248196613b.png
are multiples of
7cde695f2e4542fd01f860a89189f47a27143b66.png
or
c7cab1a05e1e0c1d51a6a219d96577a16b7abf9d.png
but not
79069377f91364c2f87a64e5f9f562a091c8a6c1.png
?
4f2633eea50914f8d485cdfcd25d31052692cda8.png
 
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Giúp em dịch đề thôi ạ
Problem 1
The median of the list
d10f097a36839fb6dffa8048cecfed506242abb2.png
is
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
. What is the mean?
51e9c99f2ad890af6808cd8dfcb4f64336058e69.png

Problem 2A number
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
is
41c544263a265ff15498ee45f7392c5f86c6d151.png
more than the product of its reciprocal and its additive inverse. In which interval does the number lie?
52af659f38c35cf5ff52f8880c0260459885a589.png

Problem 3The sum of two numbers is S.Suppose
7cde695f2e4542fd01f860a89189f47a27143b66.png
is added to each number and then each of the resulting numbers is doubled. What is the sum of the final two numbers?
a27df0f19e222fc4ed6214e378cd7dcb1c8947fa.png

Problem 4What is the maximum number for the possible points of intersection of a circle and a triangle?
581f82e14d3eb0a92f76bbd1bb744a45cf9630d5.png

Problem 5How many of the twelve pentominoes pictured below have at least one line of symmetry?
082aa547e6b283dd68e0d1c407fbe9b93aeb0eca.png

293cd11a98da59cb7da96ee246c91c550067a300.png

Problem 6Let
7dfd17dc4d3100462df726e8eb7f9262783429eb.png
and
0965bf432b818b46740e3cd4d042899628c7ad0e.png
denote the product and the sum, respectively, of the digits of the integer
174fadd07fd54c9afe288e96558c92e0c1da733a.png
. For example,
ea96f4c531e5b193f859f481988c8953cde81939.png
and
fa0bebe4e25d4918ad64cff9a1eb013dea1bd3f4.png
. Suppose
fc97ef67268cd4e91bacdf12b8901d7036c9a056.png
is a two-digit number such that
cd8df94ec880442775474c8e3bd36420b51d5095.png
. What is the units digit of
fc97ef67268cd4e91bacdf12b8901d7036c9a056.png
?
ec3fe1362b23ee3e01f8a613316eb179020e4ea8.png

Problem 7When the decimal point of a certain positive decimal number is moved four places to the right, the new number is four times the reciprocal of the original number. What is the original number?
812548feb1df5977a5245259e71e01f7ad8c05e0.png

Problem 8Wanda, Darren, Beatrice, and Chi are tutors in the school math lab. Their schedule is as follows: Darren works every third school day, Wanda works every fourth school day, Beatrice works every sixth school day, and Chi works every seventh school day. Today they are all working in the math lab. In how many school days from today will they next be together tutoring in the lab?
4d6dfdd92e666c692141034382b47518424e4c12.png

Problem 9The state income tax where Kristin lives is levied at the rate of
03f019000e7e4e14a3379d05327eb7db704d2897.png
of the first
1022a86171de46c86dd317ad366816e7d7edf63d.png
of annual income plus
82c54da3bbd9f3448135f7866095245ba3c68890.png
of any amount above
1022a86171de46c86dd317ad366816e7d7edf63d.png
. Kristin noticed that the state income tax she paid amounted to
af0e6223309402c06e4e856b92dfe88bdb235f7b.png
of her annual income. What was her annual income?
76b56ec7a825497ea360626adcbc7f3481bdaacf.png

Problem 10If
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
,
092e364e1d9d19ad5fffb0b46ef4cc7f2da02c1c.png
, and
b13f21416d84e13708696f34dea81026cda583c9.png
are positive with
20b494039a8b1aae0848c4e26c5fc485024d1882.png
,
acf0d9d8f29ea837ac4e09a65101fc401d1c8a0d.png
, and
96ac9f4f9efa577f7a1e01024901bf845be42189.png
, then
7dc8ba1464f944e344427a3009f6db3f0e272247.png
is
79d9442c8d40b147b0afb1d5e9106c618b69e565.png

Problem 11Consider the dark square in an array of unit squares, part of which is shown. The first ring of squares around this center square contains
8455f3b5cb3b4880b8c9d782a5c1f0334db819eb.png
unit squares. The second ring contains
9a5b4928c8fe50ce3c2428da3bee3505e891b788.png
unit squares. If we continue this process, the number of unit squares in the
860388333a1c7a8db1269beb5138c35d9a784412.png
ring is
7269089b676271f1087ffe21850814e43248041d.png

2eb99088741dd698404f7689b9f9e8fef645219b.png

Problem 12Suppose that
174fadd07fd54c9afe288e96558c92e0c1da733a.png
is the product of three consecutive integers and that
174fadd07fd54c9afe288e96558c92e0c1da733a.png
is divisible by
e0a0db32027a732ac57d37ef2ae9bb150f65b108.png
. Which of the following is not necessarily a divisor of
174fadd07fd54c9afe288e96558c92e0c1da733a.png
?
581f86f7c5d8ba57ce9b07f201e6efc2afd18602.png

Problem 13A telephone number has the form
ebb45fc71293503af7e3475c08587915917557cb.png
, where each letter represents a different digit. The digits in each part of the numbers are in decreasing order; that is,
74c3286b4dd93a22276e3b98e142a26416d6f21d.png
,
aa45904a25d5c070d3c62afad39e54e646ab1474.png
, and
643a817d036c40acee6b19568fd1ccdbc7831867.png
. Furthermore,
9ffb448918db29f2a72f8f87f421b3b3cad18f95.png
,
fa2fa899f0afb05d6837885523503a2d4df434f9.png
, and
a055f405829e64a3b70253ab67cb45ed6ed5bb29.png
are consecutive even digits;
6e28ce12d49d39f160d5a0ef54077fc98e4b9d2b.png
,
b1902d279ba37d60bdce4e0e987b7cd19d48974e.png
,
027f4a11d6090f9eac0ce2488df6384dad1263ea.png
, and
abb5588023cfa1ac14643e9778699f03eecc57a3.png
are consecutive odd digits; and
0ce34505b60a57420d2704b5b129a501ce25fa66.png
. Find
019e9892786e493964e145e7c5cf7b700314e53b.png
.
96227966e4c241c8c190e5e72137304572ca8003.png

Problem 14A charity sells
0b51850ccd3440214d4ccfbc14d29b2a31bfda55.png
benefit tickets for a total of
6d0bfc6b0c5072b8b3fd97f17a3099767fb74714.png
. Some tickets sell for full price (a whole dollar amount), and the rest sells for half price. How much money is raised by the full-price tickets?
395bf11b97b28abc01df245e90239631b541ecc8.png

Problem 15A street has parallel curbs
78792fe4680a164f537ea72a4f900e4471433c3b.png
feet apart. A crosswalk bounded by two parallel stripes crosses the street at an angle. The length of the curb between the stripes is
f1965fae079a9ba2c0726c307070c2355dfcb213.png
feet and each stripe is
906734e2f1010e9a171ffee8050cbc0649cea37c.png
feet long. Find the distance, in feet, between the stripes?
b47ad13b1f37b6acff27f2cc8780ab147c4500bc.png

Problem 16The mean of three numbers is
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
more than the least of the numbers and
f1965fae079a9ba2c0726c307070c2355dfcb213.png
less than the greatest. The median of the three numbers is
79069377f91364c2f87a64e5f9f562a091c8a6c1.png
. What is their sum?
8afe07970343b95aa9eabdf5b156cb45e40b4879.png

Problem 17Which of the cones listed below can be formed from a
60c74a9907b4138b1a713afe48b3f102933c1296.png
sector of a circle of radius
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
by aligning the two straight sides?
c138162f10356b232effb334d98739899ee343c7.png

315562413720809cfd98e23e1e117251b751491e.png
84c383343484ac281d88d1411a50b6924418c840.png
ca0d9c40e534b1f263d23e3d22a8871343cb067a.png
680cb7791f9aa8d02d60098e9bb1811b4a21cbf2.png
007a065a8841a315f14be249a8582a5adf767cae.png

Problem 18The plane is tiled by congruent squares and congruent pentagons as indicated. The percent of the plane that is enclosed by the pentagons is closest to
Problem 19Pat wants to buy four donuts from an ample supply of three types of donuts: glazed, chocolate, and powdered. How many different selections are possible?
d8e1e6f99a84e3cd080fe1fb0fcbea0493721267.png

Problem 20A regular octagon is formed by cutting an isosceles right triangle from each of the corners of a square with sides of length
05f1ffc8a6829f25b0b0366087a70dfd4e06fef6.png
. What is the length of each side of the octagon?
839a243410560ec1f6a421453ff88875f4596bd3.png

Problem 21A right circular cylinder with its diameter equal to its height is inscribed in a right circular cone. The cone has diameter
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
and altitude
edf074831eb5bc9e61d6d6e09f525a86e3068f6a.png
, and the axes of the cylinder and cone coincide. Find the radius of the cylinder.
f1865b40e1bdd0d0ac7d74f4f60fc0cb13fe0806.png

Problem 22In the magic square shown, the sums of the numbers in each row, column, and diagonal are the same. Five of these numbers are represented by
a9f23bf124b6b2b2a993eb313c72e678664ac74a.png
,
9ee4b825a2e36ae093ed7be5e4851ef453b34914.png
,
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
,
092e364e1d9d19ad5fffb0b46ef4cc7f2da02c1c.png
, and
b13f21416d84e13708696f34dea81026cda583c9.png
. Find
1a2a699e959784ed2e68750f5930d7923507a18c.png
.
2532d437cfd7f680f89bb522226071209a6572ff.png

4e24d4a82884d1873aa08b1502e6996d8292e7ed.png

Problem 23A box contains exactly five chips, three red and two white. Chips are randomly removed one at a time without replacement until all the red chips are drawn or all the white chips are drawn. What is the probability that the last chip drawn is white?
2f28ae49acba82276e44b41118ca6b3b842d07dd.png

Problem 24In trapezoid
f9efaf9474c5658c4089523e2aff4e11488f8603.png
,
840e2b592390eb6ec918fa6f3292716ce170de66.png
and
ce0bfc603f9a044e308b1a1fdadca917e81ad2dd.png
are perpendicular to
cfbb4c52e011ceed6e813118a7d59e931af444a2.png
, with
f785633423e813360abedae2e8e10ae63769f9a9.png
,
Problem 25How many positive integers not exceeding
de7e2da81334aad3aeeb09706fed72248196613b.png
are multiples of
7cde695f2e4542fd01f860a89189f47a27143b66.png
or
c7cab1a05e1e0c1d51a6a219d96577a16b7abf9d.png
but not
79069377f91364c2f87a64e5f9f562a091c8a6c1.png
?
4f2633eea50914f8d485cdfcd25d31052692cda8.png
:3 gg ko tính phí ~ bạn vừa tra vừa làm sẽ nhớ hơn đó :)
 
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Cựu Mod Toán
Thành viên
7 Tháng mười hai 2014
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Thanh Hóa
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Problem 1 Trung vị của dãy
d10f097a36839fb6dffa8048cecfed506242abb2.png
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
. Số trung bình cộng của dãy là ?
51e9c99f2ad890af6808cd8dfcb4f64336058e69.png

Problem 2 : Một số
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
lớn hơn tích của nghịch đảo của nó với số đối của nó
41c544263a265ff15498ee45f7392c5f86c6d151.png
đơn vị . GIá trị của x nằm trong khoảng nào ?
52af659f38c35cf5ff52f8880c0260459885a589.png

Problem 3: Tổng của 2 số là S. Giả sử cộng thêm
7cde695f2e4542fd01f860a89189f47a27143b66.png
vào mỗi số và sau đó gấp đôi mỗi kết quả lên. Tổng cuối cùng là bao nhiêu ?
a27df0f19e222fc4ed6214e378cd7dcb1c8947fa.png

Problem 4: Số giao điểm lớn nhất của 1 vòng tròn và một tam giác là ?
581f82e14d3eb0a92f76bbd1bb744a45cf9630d5.png

Problem 5: Có bao nhiêu hình pentominoes trong 12 hình dưới đây có ít nhất 1 trục đối xứng ?
082aa547e6b283dd68e0d1c407fbe9b93aeb0eca.png

293cd11a98da59cb7da96ee246c91c550067a300.png

Problem 6 Cho
7dfd17dc4d3100462df726e8eb7f9262783429eb.png
0965bf432b818b46740e3cd4d042899628c7ad0e.png
biểu thị cho tích và tổng tương ứng của các chữ số của số nguyên n . Ví dụ ,
ea96f4c531e5b193f859f481988c8953cde81939.png
fa0bebe4e25d4918ad64cff9a1eb013dea1bd3f4.png
. Giả sử
fc97ef67268cd4e91bacdf12b8901d7036c9a056.png
là số có 2 chữ số thỏa mãn
cd8df94ec880442775474c8e3bd36420b51d5095.png
. What is the units digit of
fc97ef67268cd4e91bacdf12b8901d7036c9a056.png
?
ec3fe1362b23ee3e01f8a613316eb179020e4ea8.png

Problem 7 Khi dời dấu phẩy ở một số thập phân sang phải 4 đơn vị ,được số mới gấp 4 lần nghịch đảo của chữ số ban đầu . Số ban đầu là ?
812548feb1df5977a5245259e71e01f7ad8c05e0.png

Problem 8 Wanda, Darren, Beatrice, và Chi là những người dạy kèm trong phòng thí nghiệm toán học của trường. Lịch trình của họ như sau: Darren làm việc mỗi ba ngày học, Wanda làm việc mỗi ngày thứ tư, Beatrice làm việc mỗi ngày học thứ sáu, và Chi làm việc mỗi ngày thứ bảy. Hôm nay họ đều làm việc trong phòng thí nghiệm toán học. Trong bao nhiêu ngày học kể từ ngày hôm nay họ sẽ cùng nhau dạy kèm trong phòng thí nghiệm?
4d6dfdd92e666c692141034382b47518424e4c12.png

Problem 9The state income tax where Kristin lives is levied at the rate of
03f019000e7e4e14a3379d05327eb7db704d2897.png
of the first
1022a86171de46c86dd317ad366816e7d7edf63d.png
of annual income plus
82c54da3bbd9f3448135f7866095245ba3c68890.png
of any amount above
1022a86171de46c86dd317ad366816e7d7edf63d.png
. Kristin noticed that the state income tax she paid amounted to
af0e6223309402c06e4e856b92dfe88bdb235f7b.png
of her annual income. What was her annual income?
76b56ec7a825497ea360626adcbc7f3481bdaacf.png

Problem 10 Nếu
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
,
092e364e1d9d19ad5fffb0b46ef4cc7f2da02c1c.png
, và
b13f21416d84e13708696f34dea81026cda583c9.png
dương với
20b494039a8b1aae0848c4e26c5fc485024d1882.png
,
acf0d9d8f29ea837ac4e09a65101fc401d1c8a0d.png
, va
96ac9f4f9efa577f7a1e01024901bf845be42189.png
, vậy
7dc8ba1464f944e344427a3009f6db3f0e272247.png
bằng ?
79d9442c8d40b147b0afb1d5e9106c618b69e565.png

Problem 11Consider the dark square in an array of unit squares, part of which is shown. The first ring of squares around this center square contains
8455f3b5cb3b4880b8c9d782a5c1f0334db819eb.png
unit squares. The second ring contains
9a5b4928c8fe50ce3c2428da3bee3505e891b788.png
unit squares. If we continue this process, the number of unit squares in the
860388333a1c7a8db1269beb5138c35d9a784412.png
ring is
7269089b676271f1087ffe21850814e43248041d.png

2eb99088741dd698404f7689b9f9e8fef645219b.png

Problem 12: Giả sử rằng
174fadd07fd54c9afe288e96558c92e0c1da733a.png
là tích của 3 số nguyên liên tiếp và
174fadd07fd54c9afe288e96558c92e0c1da733a.png
chia hết cho
e0a0db32027a732ac57d37ef2ae9bb150f65b108.png
. Cái nào dưới đây không nhất thiết phải là ước số của
174fadd07fd54c9afe288e96558c92e0c1da733a.png
?
581f86f7c5d8ba57ce9b07f201e6efc2afd18602.png

Problem 13 Một số điện thoại có dạng
ebb45fc71293503af7e3475c08587915917557cb.png
, mỗi chữ cái đại diện cho một chữ số khác nhau.Các chữ số trong mỗi phần của số được theo thứ tự giảm dần; đó là,
74c3286b4dd93a22276e3b98e142a26416d6f21d.png
,
aa45904a25d5c070d3c62afad39e54e646ab1474.png
,và
643a817d036c40acee6b19568fd1ccdbc7831867.png
. Hơn nữa,
9ffb448918db29f2a72f8f87f421b3b3cad18f95.png
,
fa2fa899f0afb05d6837885523503a2d4df434f9.png
, và
a055f405829e64a3b70253ab67cb45ed6ed5bb29.png
là các chữ số liền kề nhau
6e28ce12d49d39f160d5a0ef54077fc98e4b9d2b.png
,
b1902d279ba37d60bdce4e0e987b7cd19d48974e.png
,
027f4a11d6090f9eac0ce2488df6384dad1263ea.png
, và
abb5588023cfa1ac14643e9778699f03eecc57a3.png
là chữ số lẻ liên tiếp; và
0ce34505b60a57420d2704b5b129a501ce25fa66.png
. Tìm
019e9892786e493964e145e7c5cf7b700314e53b.png
.
96227966e4c241c8c190e5e72137304572ca8003.png

Problem 14 Một tổ chức từ thiện bán
0b51850ccd3440214d4ccfbc14d29b2a31bfda55.png
và thu được tổng cộng
6d0bfc6b0c5072b8b3fd97f17a3099767fb74714.png
. Một số vé bán với giá đầy đủ (một số tiền đồng), và phần còn lại bán với giá một nửa. Bao nhiêu tiền được quyên góp bằng vé toàn giá?
395bf11b97b28abc01df245e90239631b541ecc8.png

Problem 15 Một đường phố có những đường lề song song cách nhau 40 feet . Một tuyến đường băng giới hạn bởi hai sọc song song băng qua đường phố ở một góc.Chiều dài lề đường giữa các sọc là
f1965fae079a9ba2c0726c307070c2355dfcb213.png
feet và mỗi sọc dài
906734e2f1010e9a171ffee8050cbc0649cea37c.png
feet . Tìm khoảng cách, tính bằng feet, giữa các sọc?
b47ad13b1f37b6acff27f2cc8780ab147c4500bc.png

Problem 16Trung bình cộng của 3 số lớn hơn số nhỏ nhất trong 3 số
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
đơn vị và nhỏ hơn số lớn nhất
f1965fae079a9ba2c0726c307070c2355dfcb213.png
đơn vị. Số trung vị của 3 là
79069377f91364c2f87a64e5f9f562a091c8a6c1.png
. Tổng của chúng bằng bao nhiêu ?
8afe07970343b95aa9eabdf5b156cb45e40b4879.png

Problem 17Which of the cones listed below can be formed from a
60c74a9907b4138b1a713afe48b3f102933c1296.png
sector of a circle of radius
fc606f7f1e530731ab4f1cc364c01dc64a4455ee.png
by aligning the two straight sides?
c138162f10356b232effb334d98739899ee343c7.png

315562413720809cfd98e23e1e117251b751491e.png
84c383343484ac281d88d1411a50b6924418c840.png
ca0d9c40e534b1f263d23e3d22a8871343cb067a.png
680cb7791f9aa8d02d60098e9bb1811b4a21cbf2.png
007a065a8841a315f14be249a8582a5adf767cae.png

Problem 18The plane is tiled by congruent squares and congruent pentagons as indicated. The percent of the plane that is enclosed by the pentagons is closest to
Problem 19Pat muốn mua bốn bánh donut từ một nguồn cung cấp phong phú của ba loại donut: glazed, sô cô la, và bột. Có bao nhiêu lựa chọn khác nhau?
d8e1e6f99a84e3cd080fe1fb0fcbea0493721267.png

Problem 20:Một hình bát giác thường được hình thành bằng cách cắt một tam giác vuông cân từ mỗi góc của một hình vuông với các cạnh có chiều dài là 2000. Chiều dài của mỗi bên của hình bát giác là gì?
839a243410560ec1f6a421453ff88875f4596bd3.png

Problem 21: Một xi lanh tròn bên phải có đường kính bằng với chiều cao của nó được ghi vào một hình nón tròn bên phải. Các hình nón có đường kính là 10 và độ cao là 12, và trục của hình trụ và hình nón trùng nhau. Tìm bán kính của xilanh.
f1865b40e1bdd0d0ac7d74f4f60fc0cb13fe0806.png

Problem 22 Trong một hình vuôn ma thuật, tổng của các con số trong mỗi hàng, cột và đường chéo là như nhau. Năm trong số này được đại diện bởi
a9f23bf124b6b2b2a993eb313c72e678664ac74a.png
,
9ee4b825a2e36ae093ed7be5e4851ef453b34914.png
,
26eeb5258ca5099acf8fe96b2a1049c48c89a5e6.png
,
092e364e1d9d19ad5fffb0b46ef4cc7f2da02c1c.png
, và
b13f21416d84e13708696f34dea81026cda583c9.png
. Tìm
1a2a699e959784ed2e68750f5930d7923507a18c.png
.
2532d437cfd7f680f89bb522226071209a6572ff.png

4e24d4a82884d1873aa08b1502e6996d8292e7ed.png

Problem 23 Một cái hộp chứa chính xác 5 chips , 3 đỏ và 2 trắng. Chips are randomly removed one at a time without replacement until all the red chips are drawn or all the white chips are drawn. What is the probability that the last chip drawn is white?
2f28ae49acba82276e44b41118ca6b3b842d07dd.png

Problem 24 Trong hình thang
f9efaf9474c5658c4089523e2aff4e11488f8603.png
,
840e2b592390eb6ec918fa6f3292716ce170de66.png
ce0bfc603f9a044e308b1a1fdadca917e81ad2dd.png
vuông góc với
cfbb4c52e011ceed6e813118a7d59e931af444a2.png
, với
f785633423e813360abedae2e8e10ae63769f9a9.png
,
Problem 25 Có bao nhiêu số nguyên dương không vượt quá
de7e2da81334aad3aeeb09706fed72248196613b.png
là bội số của
7cde695f2e4542fd01f860a89189f47a27143b66.png
hoặc
c7cab1a05e1e0c1d51a6a219d96577a16b7abf9d.png
nhưng không phải là bội của
79069377f91364c2f87a64e5f9f562a091c8a6c1.png
?
4f2633eea50914f8d485cdfcd25d31052692cda8.png



P/s: Mình đã rất cố gắng dịch sao cho giống với đề bài bằng tiếng việt nhất :p . Còn 1 ,2 chỗ chưa dịch và có thể có sai sót. :)
 
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