Answer can be 39 As difference is varying , 6,8,10 so next will be 12 So 27 + 12 = 39

3,9,17,27, 39, 53, 69

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ANSWER IS 39..

DIFFERENCE IS 6 8 10 12

Which number replaces the question mark - 12, 9, 7, 3, 4, 6, ??

Which number replaces the question mark?