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?
7
10
12
13
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:
114 comments Page 4 of 12.

Salma marndi said:   2 years 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.
(11)

Somu.k said:   2 decades 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?

Kavya said:   4 years ago
7+3=10,
10-2=8,
8+3=11,
11-2=9,
9+3=12.
And the next number is;
12-2=10.
(12)

Simmi said:   1 decade ago
7 + 1 = 8,
10 + 1 = 11,
8 + 1 = 9,
11 + 1 = 12,
9 + 1 = 10. Add 1 alternatively.

Seema roy said:   8 years ago
How will we understand which numbers to be subtracted & added?

Please explain.
(1)

Kaderkhan said:   10 years ago
Please solve this 11, 22, 55, 165, ....

a. 495.5
b. 325.5
c. 577.5
d. 333.5
(4)

Ajay said:   3 years ago
7, 10, 8, 11, 9, 12.

7 + 1 = 8,
8 + 1 = 9,
9 + 1 = 10.

So, The answer is 10.
(14)

John Taniang said:   1 decade ago
Two series 7, 8, 9 and 10, 11, 12.

So 10 is the answer for the first series.

KrishnaRathod said:   1 decade ago
7, 8, 9, and next 10.
10, 11, 12 next is 13.

So, the answer 10 is correct.

Aditya vamsi said:   1 decade ago
Just we have to use the jumbling system among the number in ascending order.


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