Question

Find the difference between the number 279 and that obtained on reversing its digits.

Answer 1

Hint: In this question, we need to determine the difference between the number 279 and number obtained by reversing the digits. For this, we will first obtain the number by reversing the digits of the given number and then, evaluate the difference between the two.

Complete step-by-step answer:
Reversing the digits means that we have to alter the position of the digits such as if xyz is the original number where z is at the ones place, y is at the tens place and z is at the hundred place then, the number obtained by reversing the orders of the digits is zyx.
The given number is 279 in which the digit at the ones place is 9, the digit at the tens place is 7 and the digit at the hundred place is 2.
So, the number obtained by reversing the order of the digits in the number 279 is 972.
According to the question, we need to evaluate the difference in the number 279 and the number obtained on reversing the order of the digits i.e., 972.
Hence, $ 972 - 279 = 693 $ .
So, the difference between the number 279 and that obtained on reversing its digits is 693.

Note: It is interesting to note here that the position of the middle digit will not change in a three digit number. In general, the middle term of the odd digit number will never change while the same is not true for the even digit number.