What will come in place of the question mark ?) in the following number series ?
6, 5, 8, 21, 80, ?
6*1 -1 = 5
5*2 - 2 = 10-2 =8
8*3 - 3 = 24-3 = 21
21*4-4 = 84-4 = 80
80*5-5 = 395
Option E is the right answer.
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