2, 6, 21, 88, ? (1) 440 (2) 356 (3) 445

Question

In each of the following questions, write which term in sequence replaces the question mark.

2, 6, 21, 88, ? 

(1) 440 

(2) 356 

(3) 445 

(4) 352

Answer 1

(3) 445

2 x 2 + 2 → 6 

6 x 3 + 3 → 21 

21 x 4 + 4 → 88 

88 x 5 + 5 → 445