If $m$ and $n$ are distinct prime integers,then their $HCF$ is .......... .

  • A
    $mn$
  • B
    $m$
  • C
    $n$
  • D
    $1$

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The Least Common Multiple $(LCM)$ of the smallest prime number and the smallest composite number is ..........

If $HCF(a, b) = 8$,$LCM(a, b) = 64$ and $a > b$,then $a = ?$ (Options: $8, 16, 32, 64$)

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