K
kienduc_vatli


Giúp mình với các bạn ơi!!!
1/ A piggy bank contains only quarters and nickels, and there is a total of 60 coins. The total value of the coins in the bank is 7,40 dollars. How many quarters are in the piggy bank?
2/ how many digits are in the products of $2^{101}$ and $5^{99}$
1/ A piggy bank contains only quarters and nickels, and there is a total of 60 coins. The total value of the coins in the bank is 7,40 dollars. How many quarters are in the piggy bank?
2/ how many digits are in the products of $2^{101}$ and $5^{99}$