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8, 17, 35, 71, 143, 289, 575
Question

Find the wrong number in the following number series.

8, 17, 35, 71, 143, 289, 575

A.

8

B.

35

C.

17

D.

289

E.

575

Correct option is D


Wrong term = 289
Pattern of series:
8 × 2 + 1 = 17
17 × 2 + 1 = 35
35 × 2 + 1 = 71
71 × 2 + 1 =143
143 × 2 + 1 = 287
287 × 2 + 1 = 575

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