Question

The number obtained by interchanging the two digits of a two digit number is lesser than the original number by 54. if the sum of the two digits of the number is 12, then what is the original number?

• A. 28
• B. 39
• C. 82
• D. None of these

Answer 1

Answer:

D. None of these

Let the number be xy (10x + y) - (10y + x) = 54 x - y = 6 And x + y = 12 Solving the equations we get x = 9 and y = 3 So the number is 93.