What should come in place of the question mark (?) in the following number series ?
2, 26, 286, ?, 18018, 90090, 270270
The series followed here is
2*13 = 26
26*11 = 286
286*9 = 2574
2574*7 = 18018
Odd numbers starting from 13 in reverse order are being multiplied to get the next number in the series.
Thus the required number is 286*9=2574.
Option D is the right answer.
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