Which number will replace the question mark (?) in the following series?
2, 12, 30, ?, 90, 132
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 56.
Given series: 2, 12, 30, ?, 90, 132
The series follows this pattern:
2 + 10 = 12
12 + (10 + 8) = 12 + 18 = 30
30 + (18 + 8) = 30 + 26 = 56
56 + (26 + 8) = 56 + 34 = 90
90 + (34 + 8) = 90 + 42 = 132
So, the missing term in the series is 56.