Question 20

Select the option that will correctly replace the question mark (?) in the series.
9, 21, 38, 65, ?

Solution

The pattern followed is that numbers with successive multiples of 5 between them are added.

9 + 12 = 21

21 + 17 = 38

38 + 27 = 65

65 + 42 = 107

=> Ans - (D)

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