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 3 of 11.
Ayush kumar said:
9 years ago
If we see the series, we can see that alternate digits are incorrect sequence 5.
7, 8, 9 then 10.
10, 11, 12.
7, 8, 9 then 10.
10, 11, 12.
Katroth ram said:
1 decade ago
Answer is : 10.
Solution is: 7+3 = 10, 10-2 = 8, 8+3 = 11, 11-2 = 9, 9+3 = 12, 12-2 = 10 is correct or not.
Solution is: 7+3 = 10, 10-2 = 8, 8+3 = 11, 11-2 = 9, 9+3 = 12, 12-2 = 10 is correct or not.
Durga said:
1 decade ago
How do we take first 3 only? Please answer the question because I would like to learn the reasoning ability.
Nivetha said:
2 years ago
Yes, the right answer is option:B.
7 + 3 = 10.
10 - 2 = 8.
8 + 3 = 11.
11 - 2 = 9.
9 + 3 = 12.
12 - 2 = 10.
7 + 3 = 10.
10 - 2 = 8.
8 + 3 = 11.
11 - 2 = 9.
9 + 3 = 12.
12 - 2 = 10.
(10)
Praveen said:
1 decade ago
Add 1 to the odd positioned (7, 8, 9, 10) numbers, and add 1 to the even positioned numbers (10, 11, 12).
Ishwar.Kesari said:
1 decade ago
In first number adding three and second number subtracting two and so on you will get the missing number.
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.
Zuqarnain said:
1 decade ago
there are actually two series,
7, 8, 9, 10...
10, 11, 12...
So,
we place 7, 10, 8, 11, 9, 12, 10.
7, 8, 9, 10...
10, 11, 12...
So,
we place 7, 10, 8, 11, 9, 12, 10.
Pavan Bhushan said:
1 decade ago
This is an alternating series.
1st series is 7, 8, 9, 10,.....
2nd series is 10, 11, 12, 13,.....
1st series is 7, 8, 9, 10,.....
2nd series is 10, 11, 12, 13,.....
Salma marndi said:
1 year ago
7+3=10 ,
10-2=8 ,
8+3=11 ,
11-2=9,
9+3=12 ,
12-2=10.
I think 10 is the correct answer.
10-2=8 ,
8+3=11 ,
11-2=9,
9+3=12 ,
12-2=10.
I think 10 is the correct answer.
(11)
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