There are seven different natural numbers, and the difference between at least two numbers is a multiple of six

There are seven different natural numbers, and the difference between at least two numbers is a multiple of six

The remainder of any natural number divided by 6 can only be the six results of 0, 1, 2, 3, 4 and 5. The case where the remainder is 0 is actually divisible by 6
In this way, no matter how to take seven different natural numbers, there must be two numbers with the same remainder, and the difference must be a multiple of 6