Which of the following numbers will replace the question mark (?) in the given series?
3, 12, 30, 57, 93, 138, 192,?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2, i.e., 255.
3 + 9 = 12, 12 + 18 = 30, 30 + 27 = 57, 57 + 36 = 93, 93 + 45 = 138, 138 + 54 = 192, 192 + 63 = 255