Instructions

What should come in the place of question mark (?) in the following number series?

Question 117

5, 10, 25, 70, 205, ?

Solution

5*3 - 5 = 10

10*3 - 5 = 25

25*3 - 5 = 70

70*3 - 5 = 205

205*3 - 5 = 610

Hence, answer will be 610

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