Test Index

SSC CPO SI and ASI Model Paper 5

Directions (Q. 15–16): What will come in place of ‘?’ in the following series?

Question : 15 of 200

Marks: +1, -0

36 43 53 66 ? 101

Solution:

Concept:

The series follows a constant increase in the difference between consecutive terms.

Explanation:

Find the differences:

43-36=7

53-43=10

66-53=13

The differences increase by

3

each time.

So the next difference is

13+3=16

Thus, the missing term is

66+16=82

Check the next step:

82+19=101

, which matches the given last term.

Answer:

The required term is

82

, i.e. Option C.

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