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:
105 comments Page 5 of 11.

Praveen s said:   2 years ago
7, 10, 8, 11, 9, 12.
7 + 1 = 8
8 + 1 = 9
9 + 1 = 10.
So, The answer is 10
(29)

Tulasi said:   10 years ago
Odd positions are increased by 1. And even positions are increased by 1.

Rupesh Kumar Yadav said:   3 years ago
7 + 3 = 10,
10 - 2 = 8,
8 + 3 = 11,
11 - 2 = 9,
9 + 3 = 12,
12 - 2 = 10.
(7)

Shreya said:   3 years ago
7 + 3 = 10,
10 - 2 = 8,
8 + 3 = 11,
11 - 2 = 9,
9 + 3 = 12,
12 - 2 = 10.
(45)

NEBU CHERIAN said:   5 years ago
7+3=10,
10-2=8,
8+3=11,
11-2=9.
9+3=12.
12-2=10.

So, the Answer is 10.
(1)

Loku said:   2 years ago
7+3=10,
10-2=8,
8+3=11,
11-2=9,
9+3=12,
12-2=10. So, the answer is 10.
(30)

Anusha said:   1 decade ago
7, 8, 9, 10...

10, 11, 12...

Then we place 7, 10, 8, 11, 9, 12, 10.

Rajni gangwar said:   8 years ago
18, 1, 14, 9, ?, 12, 21.

What number should place at question mark?
(1)

Vinay said:   9 years ago
Thank you so much for giving a solution with various explanation.

Anthony Vishal said:   2 years ago
The explanation could be;.

7+3 =10 and 7+1 = 8.
We get 7, 10, 8.
(6)


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