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Question

The number obtained by interchanging the digits of a two-digit number is less than the original number by 63. If the sum of the digits of the number is 11, what is the original number?

  • 29
  • 92
  • 74
  • Cannot be determined
  • None
Answer- B

As per given data,

10X + Y – (10Y + X) = 63

9X – 9Y = 63

X – Y = 7 ---- (1)

X + Y = 11 ---- (2)

By solving these two equations, we get X = 9, Y = 2

Required number = 10X+Y = 92.


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