Logical Reasoning - Number Series - Discussion

Discussion Forum : Number Series - Type 1 (Q.No. 2)
Directions to Solve
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much

2.
Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?
7
10
12
13
Answer: Option
Explanation:
This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.
Discussion:
105 comments Page 6 of 11.

Jagabandhu jena said:   9 years ago
Yes, 10 is right answer.

Jada dalei said:   9 years ago
Nice solution, Thank you all.

Kaderkhan said:   9 years ago
Please solve this 11, 22, 55, 165, ....

a. 495.5
b. 325.5
c. 577.5
d. 333.5
(4)

Chetan said:   8 years ago
2, 3, 7, 17, 31, 53,.....

Find the next number please.
(2)

Ajit singh said:   8 years ago
1th line : 7.8.9.
2th line 10.11.12.

Ans : 10.

Sumeet Kumar said:   8 years ago
Thanks for sharing good efforts.

Rajni gangwar said:   8 years ago
18, 1, 14, 9, ?, 12, 21.

What number should place at question mark?
(1)

Madhavi said:   8 years ago
Nice explanation. Thanks.

Seema roy said:   7 years ago
How will we understand which numbers to be subtracted & added?

Please explain.
(1)

Srisai.putta said:   7 years ago
Just add & subtract the digits given in series 7, 10, 8, 11, 9, 12.

Ans:7+3=10, 10-2=8, 8+3=11, 11-2=9, 9+3=12, 12-2=10 :. Next coming number in the given series is 10.


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