-2, -1, 2, 7, 14, ……………
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Answer & Solution
Solution:

The number series follows the following rule

1st number = 02-2 = -2
2nd number = 12-2 = -1
3rd number = 22-2 =   2
4th number = 32-2 =   7

5th number = 42-2 = 14

6th number = 52-2 = 23

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