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?
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 9 of 11.
Chandu said:
1 decade ago
Answer is 10.
7+3 = 10-2 = 8+3 = 11-2 = 9+3 = 12-2 = 10.
7+3 = 10-2 = 8+3 = 11-2 = 9+3 = 12-2 = 10.
Uday said:
10 years ago
First find out the difference of these nos
7-10=3.
10-8=2.
8-11=3.
11-9=2.
9-12=3.
Consider no 3 as no 2 as now.
7+3=10.
10-2=8.
8+3=11.
11-2=9.
9+3=12.
12-2=10.
7-10=3.
10-8=2.
8-11=3.
11-9=2.
9-12=3.
Consider no 3 as no 2 as now.
7+3=10.
10-2=8.
8+3=11.
11-2=9.
9+3=12.
12-2=10.
Tulasi said:
10 years ago
Odd positions are increased by 1. And even positions are increased by 1.
Rohan kumbhar said:
10 years ago
Very simple. First 3 is increased and second 2 is decrease.
Santosh said:
9 years ago
Answer is 10.
Deepshikha said:
9 years ago
Its simple 3 add in first-time subt. 2 in second time.
7 + 3 = 10,
10 - 2 = 8,
8 + 3 = 11,
11 - 2 = 9,
Then,
12 - 2 = 10.
7 + 3 = 10,
10 - 2 = 8,
8 + 3 = 11,
11 - 2 = 9,
Then,
12 - 2 = 10.
Divya said:
9 years ago
Thank you so much for giving a various explanation.
Mohd moin ansari said:
9 years ago
As per the logic, 12 - 2 = 10.
John Taniang said:
9 years ago
Two series 7, 8, 9 and 10, 11, 12.
So 10 is the answer for the first series.
So 10 is the answer for the first series.
M.RAGHRAM PGDM 1 said:
9 years ago
The logic is, Take difference 3 and add 2 alternatively.
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