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Which is the next number in the sequence: 1, 3, 6, 11, 20, 37, ??

Correct Answer: 70

Explanation:

Here the given series is 1, 3, 6, 11, 20, 37, ??,


and the logic behind the series is


1 x 2 + 1 = 3


3 x 2 + 0 = 6


6 x 2 + (-1) = 11


11 x 2 + (-2) = 20


20 x 2 + (-3) = 37


37 x 2 + (-4) = 70


 


Hence, the next number in the given series is 70.


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