Question
What will come in place of the question mark (?) in the
following series? 12, 13, 27, ?, 329, 1646Solution
ATQ, 12 × 1 + 1 = 13 13 × 2 + 1 = 27 27 × 3 + 1 = 82 82 × 4 + 1 = 329 329 × 5 + 1 = 1646
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