Logical Reasoning - Number Series - Discussion

Discussion Forum : Number Series - Type 1 (Q.No. 4)
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

4.
Look at this series: 22, 21, 23, 22, 24, 23, ... What number should come next?
22
24
25
26
Answer: Option
Explanation:
In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on.
Discussion:
47 comments Page 4 of 5.

Aaj said:   1 decade ago
Why not 22? 22 21 23, 22 24 23, 22 27 23 can also happen right?
(1)

JIYA said:   1 decade ago
There are alternative numbers 25.

= 22 23 24 -------.

And another alternative numbers:

= 21 22 23 24.

So the answer is 25.
(1)

Pundik Vinayak said:   1 decade ago
Here there is two no series following.

22 23 24 25 26 27.

21 22 23 24 25 26.
(1)

Jass said:   2 weeks ago
Good Experience attending this session. Thanks, for explaining.

Abhiram said:   2 decades ago
Another way to solve problem:

Sum alternatively it will get

22 + 1 = 23
23 + 1 = 24
21 + 1 = 22
22 + 1 = 23
so
24 + 1 = 25.

Heidi said:   8 years ago
Really well explained, thanks @Kavi.

Shiv dhakad said:   9 years ago
22-21 = 1,
21-23 = -2,
23-22 = 1,
22-24 = -2,
24-23 = 1,
23-25 = -2.

Ankur Sharma said:   9 years ago
This is soo simple, take all series in two pairs like, (22, 21), (23, 22), (24, 23),(25,24), ....

Aditya vamsi said:   9 years ago
Subtraction and adding series of the number 1and 2 takes place here.

Sudhansu said:   10 years ago
Series of -1 then +2, therefore the answer is 25.


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