Question

the sum of the digits of two digits number is 3 . The number is obtained by interchaging 9 less than original number . find the original number.​

Answer 1

The sum of two digits in a two-digit number is 3.

The only two-digit numbers with a sum of 3 are:

03, 12, 21 and 30

The number obtained by interchanging the digits …

When you interchange the digits, you change:

03 to 30

12 to 21

21 to 12

30 to 03

… is nine less than the original number.

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