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CDS 2022 · PYQ · Number System · medium

41^43 + 43^43 is divisible by

  1. A.86
  2. B.88
  3. C.84✓ Correct
  4. D.80

Explanation

Since 43 is odd, a^n + b^n is divisible by a+b. So 41^43 + 43^43 is divisible by 41+43 = 84.
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