Multiple choice general knowledge math & puzzles

The difference between a two digit number and the number formed by interchanging the position of its digits is 36.what is the difference between the two digits of that number?

  1. 2

  2. 3

  3. 4

  4. 6
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let the two-digit number be 10x + y (where x is tens digit, y is units digit). The reversed number is 10y + x. Their difference: (10x + y) - (10y + x) = 9x - 9y = 9(x-y) = 36, so x-y = 4. The difference between the digits is 4.

Keep practicing — related questions