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If a student adds a two-digit number with a number obtained by reversing its digits, the sum will be-
  • a)
    Divisible by 2
  • b)
    Divisible by 3
  • c)
    Divisible by 7
  • d)
    Divisible by 11
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
If a student adds a two-digit number with a number obtained by reversi...
Calculation:
Let the two digit number be 10x + y.
Number obtained by reversing the digit 10y + x.
Now adding the numbers we get,
⇒ 10x + x + 10y + y
⇒ 11x + 11y
⇒ 11(x + y)
We can see that the result is divisible by 11.
∴ The correct answer is 11.
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If a student adds a two-digit number with a number obtained by reversing its digits, the sum will be-a)Divisible by 2b)Divisible by 3c)Divisible by 7d)Divisible by 11Correct answer is option 'D'. Can you explain this answer?
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