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 10 of 11.
Debendra said:
1 decade ago
7+3=10
8+3=11
9+3=12
10+3=13
Answer 10
8+3=11
9+3=12
10+3=13
Answer 10
Bhushan Salunkhe said:
1 decade ago
7+3=10
10-2=8
8+3=11
11-2=9
9+3=12
12-2=10
Because look the series of addition and subtraction 1st add 3 you get 10 then subtraction 2 you get 8 same next again add 3 get 11.
Again same - 2 get 9 again add 3 get 12 obviously next is subtraction 12-2 = 10.
The series + - + - + -
10-2=8
8+3=11
11-2=9
9+3=12
12-2=10
Because look the series of addition and subtraction 1st add 3 you get 10 then subtraction 2 you get 8 same next again add 3 get 11.
Again same - 2 get 9 again add 3 get 12 obviously next is subtraction 12-2 = 10.
The series + - + - + -
Sharanya said:
1 decade ago
This answer is simple.
1st add 3, next subtract 2.
7+3=10.
10-2=8.
8+3=11.
11-2=9.
9+3=12.
12-2=10.
Answer 10.
1st add 3, next subtract 2.
7+3=10.
10-2=8.
8+3=11.
11-2=9.
9+3=12.
12-2=10.
Answer 10.
Shanthi said:
1 decade ago
7+3=10-2=8+3=11-2=9+3=12-2=10
Balvir said:
1 decade ago
7+3=10-2=8+3=11-2=9+3=12-2=10 Ans
Gaurav said:
1 decade ago
Somu is right
Juhi said:
1 decade ago
Thanks Somu.K great explain. Thanks. Friend.
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)
Jabin said:
1 decade ago
Correct.
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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