Question

lop 6A co it nhat 40 hoc sinh.Neu xep 4em,6em vao 1 to thi vua du.Nhung sep 7 em vao 1 to thi thua 1em.Hoi lop 6A co bao nhieu hoc sinh

Answer 1

chiu roi

tk nhe@@@@@@@@@@@@!!

ai tk minh minh tk lai!!!!

bye

Answer 2

Vi hoc sinh thu 1 chia cho 4 to thi vua du nen so hoc sinh phai la

B(4)va >40 Ma B(4)<40 nen so can tim la

{0,4,...,36}

Vi khi chia 6 to thi vua du nen so hoc sinh la B(6)Ma B(6)={0.12,...,36} la nhung so < 40.Vay so can tim la 36