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AP EAMCET · Maths · Binomial Theorem

If \(k \in N\), then \(3^{3 k}-26^k-1\) is divisible by

  1. A 676
  2. B 8
  3. C 64
  4. D 26
Verified Solution

Answer & Solution

Correct Answer

(D) 26

Step-by-step Solution

Detailed explanation

\(3^{3 k}-26^k-1 = 27^k-26^k-1\) \(27^k-26^k-1 \equiv 1^k - 0^k - 1 \pmod{26}\) \( \equiv 0 \pmod{26}\) 26