Logical Reasoning - Number Series - Discussion

Discussion Forum : Number Series - Type 1 (Q.No. 2)

Number Series

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

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 4 of 11.

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?

Kavya said: 3 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: 9 years ago

7 + 1 = 8,
10 + 1 = 11,
8 + 1 = 9,
11 + 1 = 12,
9 + 1 = 10. Add 1 alternatively.

Seema roy said: 7 years ago

How will we understand which numbers to be subtracted & added?

Please explain.

(1)

Kaderkhan said: 9 years ago

Please solve this 11, 22, 55, 165, ....

a. 495.5
b. 325.5
c. 577.5
d. 333.5

(4)

Ajay said: 1 year 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: 9 years ago

Two series 7, 8, 9 and 10, 11, 12.

So 10 is the answer for the first series.

KrishnaRathod said: 9 years ago

7, 8, 9, and next 10.
10, 11, 12 next is 13.

So, the answer 10 is correct.

Aditya vamsi said: 9 years ago

Just we have to use the jumbling system among the number in ascending order.

Meet kaur said: 5 years ago

10-7 = 3
10--8 = 2
11--8 =3
11-9 =2
Same where,
12-9 = 3
Then,
12 - 2 = 10.

(4)

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