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
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.
Sulekha said:
1 decade ago
According to the given answer the next number should be (25*1)+(1+2+3+4+5) = 35. But the next number is 40 in the given series.
Anyone can explain? : (.
Anyone can explain? : (.
Abhishek said:
1 decade ago
Ignore first number (5), now 6+9=15, 15+25=40.
Ramya said:
9 years ago
Differences between first four numbers in series are 1, 3, 6.
1*1 + 2 = 3.
3*1 + 3 = 6.
So.
6*1 + 4 = 10.
The next number is 10 + 15 = 25.
1*1 + 2 = 3.
3*1 + 3 = 6.
So.
6*1 + 4 = 10.
The next number is 10 + 15 = 25.
Bhanu said:
8 years ago
Can anyone explain clearly?
Sai krishna said:
7 years ago
You are right, agree @Jitender.
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