What will come in the place of the question mark in the following series?
6, 14.5, 31.5, 65.5, ?
a) 133.5
b) 138.5
c) 135.5
d) 130.5
e) 136.5
Sol:
Logic in the series:
6 * 2 + 2.5 = 14.5
14.5 * 2 + 2.5 = 31.5
31.5 * 2 + 2.5 = 65.5
65.5 * 2 + 2.5 = 133.5
So, missing term in the series = 133.5
