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 5 of 11.
Aditya vamsi said:
9 years ago
Just we have to use the jumbling system among the number in ascending order.
M.RAGHRAM PGDM 1 said:
9 years ago
The logic is, Take difference 3 and add 2 alternatively.
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.
Vinay said:
9 years ago
Thank you so much for giving a solution with various explanation.
KrishnaRathod said:
9 years ago
7, 8, 9, and next 10.
10, 11, 12 next is 13.
So, the answer 10 is correct.
10, 11, 12 next is 13.
So, the answer 10 is correct.
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.
Simmi said:
9 years ago
7 + 1 = 8,
10 + 1 = 11,
8 + 1 = 9,
11 + 1 = 12,
9 + 1 = 10. Add 1 alternatively.
10 + 1 = 11,
8 + 1 = 9,
11 + 1 = 12,
9 + 1 = 10. Add 1 alternatively.
Sedhumadhavan said:
9 years ago
First we find difference between each two numbers.
Then that comes,
7, 10 - 2 numbers is difference.
10, 8 - (-1) number is difference.
8, 11 - 2 number is difference.
11, 9 - (-1) number is difference.
9, 12 - 2 number is difference.
Next number is see before the series is 2, -1, 2, -1, 2.
Then finally we consider difference is -1. So, the answer is 10.
Then that comes,
7, 10 - 2 numbers is difference.
10, 8 - (-1) number is difference.
8, 11 - 2 number is difference.
11, 9 - (-1) number is difference.
9, 12 - 2 number is difference.
Next number is see before the series is 2, -1, 2, -1, 2.
Then finally we consider difference is -1. So, the answer is 10.
(2)
Navadurga said:
9 years ago
Here,
7 + 3 = 10,
10 - 2 = 8,
8 + 3 = 11,
11 - 2 = 9,
9 + 3 = 12,
12 - 2 = 10 according to this B is correct answer.
7 + 3 = 10,
10 - 2 = 8,
8 + 3 = 11,
11 - 2 = 9,
9 + 3 = 12,
12 - 2 = 10 according to this B is correct answer.
Srimathi said:
9 years ago
It's a very simple.
7, 10, 8, 11, 9, 12, ...
Divide in to two parts.
1st -> 7 8 9.
2nd -> 10 11 12.
So the next number would be 10.
7, 10, 8, 11, 9, 12, ...
Divide in to two parts.
1st -> 7 8 9.
2nd -> 10 11 12.
So the next number would be 10.
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