Question

Find the missing term (?) in the following number series.

5     3      3      5      15     ?

A 60 Correct Answer Incorrect Answer
B 69 Correct Answer Incorrect Answer
C 75 Correct Answer Incorrect Answer
D 65 Correct Answer Incorrect Answer
E 70 Correct Answer Incorrect Answer

Solution

5 x 1 - 2 = 3 3 x 2 - 3 = 3 3 x 3 - 4 = 5 5 x 4 - 5 = 15 15 x 5 - 6 =  69

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