Students are lined up for a drill and the number of people is between 90 and 110, if they are lined up in 3 columns no more and no less, in 5 columns 2 less, in 7 columns 4 less, how many people are t

Students are lined up for a drill and the number of people is between 90 and 110, if they are lined up in 3 columns no more and no less, in 5 columns 2 less, in 7 columns 4 less, how many people are there ***? A native solution, take a piece of paper and copy the numbers from 90 to 110. Then,

Because there are no more or less than 3 columns, circle the multiples of 3;

Because there are 2 less than 5 columns, from the circled numbers, choose the number that is divisible by 3 by 5, and then make a note of it;

Because there are 4 fewer than 7 columns, choose the number that is divisible by 3 by 7 by 7, and then make a note of it. There should be only one.

Answer:*** There are 108 people.

This is a very crude solution, but please take it.