Question

Directions for Q.3 to Q.7 : In each of the following
series, one number is missing. Understand the exact
pattern and then choose the missing number.
3. 2, 6, ?, 61, 121
(1) 25
(2) 21
(4) 29
(3) 18​

Answer 1

Answer:

I think it wil be 21

and the pattern will be 2,6,21,61,121,161...

Is it is correct?