Download Aptitude Crack
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Odd Man Out and Series - General Aptitude

Find out the wrong number in the series.
Q1:

3, 7, 15, 39, 63, 127, 255, 511

A 7

B 15

C 39

D 63

E 127

ANS:C - 39

Go on multiplying 2 and adding 1 to get the next number. So, 39 is wrong.