Question 2: Class 3, Grade 5 students line up to do exercises together. If there are five people in each row, there are two more. If there are six people in each row, there are two more. It is understood that the number of students in Class Three is between 30 and 50. How many students are there in Class Three?

Solution: First, find the least common multiple of 5 and 6 (that is, 30).

30+2=32 (Name)

There are 32 students in Class Three, Grade Five.

Question 3: Xiao Wei has a haircut every 30 days, and Xiaoming has a haircut every 40 days. On June 65438+1 October1day, 2009, both of them went to a shop for a haircut. How many times have they had their hair cut together this year?

Solution: Xiao Wei has a haircut every 30 days and Xiaoming has a haircut every 40 days, so they meet every 120 days. 365 days a year.

365÷ 120≈3

They have their hair cut three times a year.