Verbal Reasoning - Series Completion - Discussion

Discussion Forum : Series Completion - Section 1 (Q.No. 36)
Directions to Solve

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.


36.
2,2,5, 13,28,?
49
50
51
52
Answer: Option
Explanation:

The pattern is + 0, + 3, + 8, + 15, ..... i.e. + (l2 - 1), + (22 - 1), + (32 - 1), + (42 - 1), .....

So, missing term = 28 + (52 - 1) = 28 + 24 = 52.

Discussion:
6 comments Page 1 of 1.

Nikhil said:   1 month ago
Thanks all for explaining it.

Shahnawaz said:   2 years ago
2 + (1^2 - 1) = 2,
2 + (2^2 - 1) = 5,
5 + (3^2 - 1) = 13,
13 + (4^2 - 1) = 28,

Same procedure as follows we get,
28 + (5^2 - 1) = 52
The next term is 52.

Milan said:   5 years ago
2-2=0
2-5=3
5-13=8
13-28=15.

The difference between 3&8=5, 8&15=7, and the difference in 5&7=2 got 9 then add 9+15=24.
Add 24+28=52.

Bhabani said:   6 years ago
Cannot understand please be clear.

Kkk said:   7 years ago
Solution:

2 + (1^2 - 1) = 2
2 + (2^2 - 1) = 5
5 + (3^2 - 1) = 13
13 + (4^2 - 1) = 28
Same procedure as follows we get,
28 + (5^2 - 1) = 52
The next term is 52.

Ronald said:   8 years ago
How? Please explain in detail.

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