There are 72 students in grade five and 66 students in grade six in a primary school. If the school wants to organize students of two grades to participate in extracurricular activities, they need to be grouped according to grades. What is the maximum number of people in each group to make each group the same? At this time, the fifth and sixth grades were divided into several groups.

A difficult problem, many people fall for it.

There are 72 students in grade five and 66 students in grade six in a primary school. If the school wants to organize students of two grades to participate in extracurricular activities, they need to be grouped according to grades. What is the maximum number of people in each group to make each group the same? At this time, the fifth and sixth grades were divided into several groups.

The greatest common divisor of 72 and 66 is 6.

So there are no more than six people in each group.

The fifth grade is divided into 72 ÷ 6 = 12 groups.

The sixth grade is divided into 66 ÷ 6 = 1 1 group.