Fill in the blank space for the given series with the correct alternative.
$840, 168, 42, 14, 7, (...)$

  • A
    $1$
  • B
    $7$
  • C
    $9$
  • D
    $12$

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Fill in the blank space for the given series with the correct alternative.
$3, 8, 22, 63, 185, (\ldots)$

Fill in the blank space for the given series with the correct alternative.
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