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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