If $n \in N$,then ${11^{n + 2}} + {12^{2n + 1}}$ is divisible by

  • A
    $113$
  • B
    $123$
  • C
    $133$
  • D
    None of these

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The remainder left when $8^{2n} - 62^{2n+1}$ is divided by $9$ is:

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Let $a, b, c, d$ be positive integers. Consider the following statements:
$I$. If $9$ divides $a^3+b^3+c^3$,then $3$ divides $abc$.
$II$. If $9$ divides $a^3+b^3+c^3+d^3$,then $3$ divides $abcd$.

For all integers $n \geq 1$,which of the following is divisible by $9$?

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