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16, ?, 21, 30, 46, 71, 107

Correct Answer: 17

Explanation:

The given series is in the below pattern,
First term = 16
Second term = First term + 12
Second term = 16 + 12 = 17
∴ ? = 17
Third term = Second term + 22
Third term = 17 + 22 = 21
Fourth term = Third term + 32
Fourth term = 21 + 32 = 30 ;
Fifth term = Fourth term + 42
Fifth term = 30 + 42 = 46 ;
Similarly , we can find all others terms also.
Sixth term = Fifth term + 52
Sixth term = 46 + 52 = 71;
Seventh term = Sixth term + 62
Sixth term = 71 + 62 = 107
Hence , Second term = 17


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