A

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Q. A number consists of two digits. If the number formed by interchanging the digits is added to the original number, the resulting number (i.e. the sum) must be divisible by

  • (A) 9
  • (B) 11
  • (C) 3
  • (D) 5
  • Correct Answer - Option(B)
  • Views: 5
  • Filed under category Math
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Explanation by: Admin
Let the number be 10x + y

After interchanging the digits, the number obtained = 10y + x

According to the question,

Resulting number

= 10x + y + 10y + x

= 11x + 11y

= 11 (x + y) which is exactly divisible by 11.

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