20, 57, 118, 209, 336, 508

20, 57, 118, 209, 336, 508

Directions: Find out the wrong number in the following number series.

Q. 20, 57, 118, 209, 336, 508

A.336

B.118

C.209

D.508

E.57

 Sol:

33 – 7 = 20

43 – 7 = 57

53 – 7 = 118

63 – 7 = 209

73 – 7 = 336

83 – 7 = 505

quantitative aptitude
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