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In "Number Series" question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces

In following question, a number series is given with one term missing. Choose correct alternative

2,6,12,20,30,42,56,x

Option:
A. 60
B. 64
C. 70
D. 72
Answer: D . 72

Justification:

The sequence is 1 * 2 , 2 * 3, 3 * 4, 4 * 5.

Next number = 8 * 9 = 72

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