The tenth digit of a number is twice the unit digit. If the value of unit digit is 2 and the digits of number interchange then what will be the difference of the numbers.

The tenth digit of a number is twice the unit digit. If the value of unit digit is 2 and the digits of number interchange then what will be the difference of the numbers.

  1. 22
  2. 23
  3. 18
  4. 42