thcs tran phu nong cong lop 6B

K

kool_boy_98

so n co dang
31k + 78 (k > 0)
hoac 8k + 7 (k > 11)

n = 295
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dang nay minh cung khong gioi lam dau............nhung ket qua nay lla dung 100% roi do!
 
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