Question 31

Select the number that can replace the question mark (?) in the given number series.
24, 60, 120, 210, 336, ?

The pattern followed here is : 

Double difference is increasing by the 6 

24 + 6 = 30

30 + 6 = 36

36 + 6 = 42

Hence, 126 + 42 = 168 

so, 336 + 168 = 504

Hence, Option D is correct. 

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