What will come in place of the question mark (?) in each of the following number series ?
1, 2, 6, 21, 88, ?
1*1 + 1 = 2
2*2 + 2 = 6
6*3 + 3 = 21
21*4 + 4 = 88
88*5 + 5 = 445
Option D is the right answer.
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