6, 11, 21, 36, 56, ?

by AdminX

What will come at the place of question mark ?
6, 11, 21, 36, 56, ?

A. 91
B. 51
C. 81
D. 42

Answer & Solution

Answer: Option C
Solution:

6 (+5)→ 11 (+10)→ 21 (+15)→ 36 (+20)→ 56 (+25) → 81.

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