Odd Man Out and Series - Arithmetic Aptitude Questions and Answers

Home / Arithmetic Aptitude / Odd Man Out and Series :: Discussion

15, 31, 63, 127, 255, (....)

513

511

517

523

Answer : Option B

Explanation :

Each number is double the preceding one plus 1.

So, the next number is (255 x 2) + 1 = 511.

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