Find the missing number in the series
2, 6, 12, 20, ?, 42, 56
Answer
Correct Answer : b ) 30
Explanation :Let's look at the series and try to visualize what pattern it is making:
2 = 12 + 1
6 = 22 + 2
12 = 32 + 3
20 = 42 + 4
? = 30 = 52 + 5
42 = 62 + 6
56 = 72 + 7
Therefore, the missing number is 30.
Hence, (b) is the correct answer.
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