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:
111 comments Page 6 of 12.
Rohit.rcert said:
1 decade ago
It's obivously a alternate series of number in which numbers are changed by +3 and then -2 in A order.
and as praveen suggest A idea of breaking this chain into two sub chain of number....1st odd place number then 2nd even place number ant then each number of series is changed by +1 is a very nice shortcut...appriciate.
and as praveen suggest A idea of breaking this chain into two sub chain of number....1st odd place number then 2nd even place number ant then each number of series is changed by +1 is a very nice shortcut...appriciate.
(1)
Rajni gangwar said:
9 years ago
18, 1, 14, 9, ?, 12, 21.
What number should place at question mark?
What number should place at question mark?
(1)
Seema roy said:
8 years ago
How will we understand which numbers to be subtracted & added?
Please explain.
Please explain.
(1)
NEBU CHERIAN said:
6 years ago
7+3=10,
10-2=8,
8+3=11,
11-2=9.
9+3=12.
12-2=10.
So, the Answer is 10.
10-2=8,
8+3=11,
11-2=9.
9+3=12.
12-2=10.
So, the Answer is 10.
(1)
Sapana said:
4 months ago
Yes, I think 10 is the correct answer.
(1)
Praveen said:
2 decades ago
Add 1 to the odd positioned (7, 8, 9, 10) numbers, and add 1 to the even positioned numbers (10, 11, 12).
Bharat said:
2 decades ago
One more thing every alternate number increase as 7, 8, 9, 10.
Kasi said:
1 decade ago
I want more explanation about this with more examples example.
Harikrishnan said:
1 decade ago
It has the alternating series as 7, 8, 9 and 10, 11, 12. So the next series will be 10, 13. Like that.
Somu.k said:
1 decade ago
7+3=10
10-2=8
8+3=11
11-2=9
9+3=12
12-2=10
So, Answer is 10.
This is correct or not?
10-2=8
8+3=11
11-2=9
9+3=12
12-2=10
So, Answer is 10.
This is correct or not?
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