Suppose that one number contains the same digit as another number, but in resverse order. What is true about the difference of the two number?

When two numbers contain the same digits but in reverse order, we can subtract the smaller number from the larger number to find the difference. Let's take an example to understand this better.

Suppose we have two numbers: 832 and 238. Notice that both numbers have the same digits (2, 3, and 8), but the order of the digits is reversed between the two numbers. To find the difference, we subtract the smaller number (238) from the larger number (832):

832 - 238 = 594

The difference between these two numbers is 594.

Now, let's generalize this observation. When you subtract the smaller number (in reverse order) from the larger number, the result will always be a multiple of 9. In other words, the difference will be divisible by 9.

In the example above, 594 is indeed a multiple of 9 because 594 ÷ 9 = 66.

Therefore, a general rule we can observe is that the difference between two numbers that contain the same digits, but in reverse order, will always be a multiple of 9.