Identify the number that does not belong to the following series: 16, 17, 25, 52, 116, 243

Identify the number that does not belong to the following series.
16, 17, 25, 52, 116, 243

Option
a) 116
b) 52
c) 243
d) 25

Solution

16, 17, 25, 52, 116, 243
Difference : 1, 8, 27, 64, 127
series is : 1³, 2³, 3³, 4³
Next in difference series is 5³ = 125
Next number of series = 116 + 125 = 241
Therefore, 243, is not belong to series.

Answer: 243