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:
50 comments Page 4 of 5.

Zhia said:   10 years ago
Now, I understand this. Thanks :).
(1)

SATHISHKUMAR said:   10 years ago
22 - 1 = 21.
21 + 2 = 23.
23 - 1 = 22.
22 + 2 = 24.
24 - 1 = 23.
23 + 2 = 25.

Hence answer = 25.
(3)

K.sujitha said:   1 decade ago
For an alternative number, we have to add 1.
(1)

Jhansi said:   1 decade ago
Logic of this problem is alternate addition to the numbers.
(1)

M.RAGHURAM PGDM 1 said:   1 decade ago
It is simple and the logic is take 1 difference and add 2 alternatively.
(1)

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

Siraj Dal said:   1 decade ago
There is a 2 no.of sequence.

22, 21
23, 22
24, 23
?(25), 24
(1)

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

Akashdeep said:   1 decade ago
1 minus 2 plus.

Divya said:   1 decade ago
You can also see 1st letter is odd number and second 2 letters are even numbers.


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