Answer :
He has 10 students.
If he give 2 each, that's 20 pencils, but he has 10 left.
If he give 3 each, that's 30. No pencils left over.
If he give 2 each, that's 20 pencils, but he has 10 left.
If he give 3 each, that's 30. No pencils left over.