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CDS 2022 · PYQ · Number System · medium

4^61 + 4^62 + 4^63 + 4^64 is divisible by

  1. A.11
  2. B.17✓ Correct
  3. C.9
  4. D.7

Explanation

4^61(1+4+16+64) = 4^61 × 85 = 4^61 × 5 × 17. So divisible by 17.
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