What will come in place of the question mark (?) in the following number series? 5, 7, ?, 25, 45, 75

Question

Accepted Answer

The series given follow the pattern +2, +2+4, +2+4+6, +2+4+6+8, +2+4+6+8+10,... Here ? = 7 + 2 + 4 = 13.

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