श्रृंखला में लुप्त संख्या ज्ञात कीजिए: $2, 6, 14, 30, ?, 126, 254$.

  • A
    $81$
  • B
    $65$
  • C
    $62$
  • D
    $69$

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श्रृंखला में लुप्त संख्या ज्ञात कीजिए: $3, 15, 35, ?, 99, 143$.

श्रृंखला में लुप्त संख्या ज्ञात कीजिए: $2, 5, 9, ?, 20, 27$.

$1015, 508, 255, 129, 66.5, ?, 20.875$

$3, 15, ?, 63, 99, 143$

$3, 10, 101, ?$

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