Question
What will come in place of the question mark (?) in the
following series? 7, 20, 59, 176, 527, 1580, ?Solution
7 × 3 – 1 = 20 20 × 3 – 1 = 59 59 × 3 – 1 = 176 176× 3 – 1 = 527 527 × 3 – 1 = 1580 1580× 3 – 1 = 4739
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