Question

At the class party, it has been agreed that every5th student on the class list will receive a pencil. It has also been agreed that every 3rd student on the class list will receive an eraser. What are the class numbers of the students who will receive an eraser. What are the class numbers of the students who will receive both a pencil and an eraser if there are 35 students in class?

Answer 1

pencil receivers are : 5,10,15,20,25,30,35
eraser receivers are : 3,6,9,12,15,18,21,24,27,30,33
receivers of both pencil and eraser : 15,30