What should come in place of the question mark (?) in the given series?
110, 221, 443, 887, 1775, ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 3551.
110 × 2 + 1 = 220 + 1 = 221
221 × 2 + 1 = 442 + 1 = 443
443 × 2 + 1 = 886 + 1 = 887
887 × 2 + 1 = 1774 + 1 = 1775
1775 × 2 + 1 = 3550 + 1 = 3551