Test Index

SSC CGL Model Paper 16

Question : 9 of 100

Marks: +1, -0

1, 3, 6,11,18, ?

Solution:

Concept:

Find the pattern by calculating the differences between consecutive numbers in the series.

Explanation:

The differences are:

3-1=2

6-3=3

11-6=5

18-11=7

These are consecutive prime numbers:

2,3,5,7,\ldots

So the next difference should be the next prime number, which is

11

Therefore, the missing term is

18+11=29

Answer:

The missing number is

29

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