Question 35

Select the number that can replace the question mark (?) in the following series.
13, 22, 33, 48, 69, ?

Solution

In this series double difference is applicable.

Let's assume 'y' in place of the question mark.

21+8 = y-69

29 = y-69

y = 69+29 = 98

hence 98 will come in place of the question mark.


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