What will come in place of the question mark (?) in the following number series ?
15, 21, 38, 65, 101, ?
21 - 15 = 6
38 - 21 = 17
65 - 38 = 27
101 - 65 = 36
Now, let us take a look at the second order difference.
17 - 6 = 11
27 - 17 = 10
36 - 27 = 9
Continuing the sequence, we get the next term as 36+8 = 44
101 + 44 = 145.
Option B is the right answer.
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