Question

[ggggg]

1 lop hoc co 12 HS thich mon toan,15 HS thich mon van,5 HS thich ca 2 mon va 7 HS khong thich ca 2 mon .lop hoc do co tat ca bao nhieu HS

Answer 1

[buitanquocdat]

So hoc sinh cua lop do la: 12+15+5+7 = 39 ( hoc sinh)