Which of the following numbers will replace the question marks (?) in the given series?
2, 6, 12, 20, ?, ?, 56, 72
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 30,42
2, 6, 12, 20, ?, ?, 56, 72
2 + 4 = 6
6 + 6 = 12
12 + 8 = 20
20 + 10 = 30
30 + 12 = 42
42 + 14 = 56
56 + 16 = 72