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?
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.
M.RAGHURAM PGDM 1 said:
1 decade ago
It is simple and the logic is take 1 difference and add 2 alternatively.
(1)
Jhansi said:
1 decade ago
Logic of this problem is alternate addition to the numbers.
(1)
Siraj Dal said:
1 decade ago
There is a 2 no.of sequence.
22, 21
23, 22
24, 23
?(25), 24
22, 21
23, 22
24, 23
?(25), 24
(1)
Dayanidhi parida said:
8 years ago
Thanks for explaining the solution.
(1)
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.
= 22 23 24 -------.
And another alternative numbers:
= 21 22 23 24.
So the answer is 25.
(1)
Sudhansu said:
1 decade ago
Series of -1 then +2, therefore the answer is 25.
Chandrika said:
3 months ago
I think the answer is 25.
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.
Sum alternatively it will get
22 + 1 = 23
23 + 1 = 24
21 + 1 = 22
22 + 1 = 23
so
24 + 1 = 25.
Santhikannan said:
1 decade ago
22-1=21
21+2=23
23-1=22
22+2=24
24-1=23
23+2=25
(Therefor 23+2=25)
21+2=23
23-1=22
22+2=24
24-1=23
23+2=25
(Therefor 23+2=25)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers