Which of the following numbers will replace the question mark (?) in the given series?
12, 26, 54, ?, 222, 446
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 110.
12, 26, 54, ?, 222, 446
(12 × 2) + 2 = 26
(26 × 2) + 2 = 54
(54 × 2) + 2 = 110
(110 × 2) + 2 = 222
(222 × 2) + 2 = 446