Verbal Reasoning - Series Completion - Discussion

Discussion Forum : Series Completion - Section 1 (Q.No. 9)
Directions to Solve

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


9.
5, 6, 9, 15, ?, 40
21
25
27
33
Answer: Option
Explanation:

The pattern is + 1, + 3, + 6,....., i.e. + 1, + (1 + 2), + (1 + 2 + 3),.....

So, missing term = 15 + (1 + 2 + 3 + 4) = 25.

Discussion:
15 comments Page 2 of 2.

Alric said:   1 decade ago
I like the explanation that jitender gave that is more understandable.

Naveen Kumar said:   8 years ago
I agree with your explanations @Venuu and @Jitender.
(1)

Abhishek said:   1 decade ago
Ignore first number (5), now 6+9=15, 15+25=40.

Sai krishna said:   7 years ago
You are right, agree @Jitender.

Bhanu said:   8 years ago
Can anyone explain clearly?


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