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The expression $3^{2n+1} + 2^{n+2}$ is divisible by $7$ for

  1. all positive integer values of $n$
  2. all non-negative integer values of $n$
  3. only even integer values of $n$
  4. only odd integer values of $n$
in Numerical Ability by Boss (16.8k points)
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1 Answer

+1 vote


Option (A) is the correct answer.

by Boss (13.7k points)
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