Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 2 (Q.No. 9)
Directions to Solve
Look carefully for the pattern, and then choose which pair of numbers comes next.
9.
21 25 18 29 33 18
Answer: Option
Explanation:
This is a simple addition series with a random number, 18, interpolated as every third number. In the series, 4 is added to each number except 18, to arrive at the next number.
Discussion:
34 comments Page 1 of 4.
Manjoy said:
8 months ago
Why 18 is not arrived at the next number? Anyone please clarify the answer in detail?
Ghoshi said:
9 months ago
@All.
Many one proposed that option "c" is correct.
But the Right Answer is option "d".
Because 18 comes after two numbers that is "37" & "41".
And the ultimate series is 21, 25, 18, 29, 33, 18, 37, 41, 18.
Many one proposed that option "c" is correct.
But the Right Answer is option "d".
Because 18 comes after two numbers that is "37" & "41".
And the ultimate series is 21, 25, 18, 29, 33, 18, 37, 41, 18.
(6)
Sumit said:
1 year ago
As per the Question, we see here that the 18 comes after every 3rd number.
And considering it we come across the logic that all the numbers have the difference of the (4).
So, option C will be the correct option to choose, as it holds the required value 37, 18.
And considering it we come across the logic that all the numbers have the difference of the (4).
So, option C will be the correct option to choose, as it holds the required value 37, 18.
(5)
Ashok said:
2 years ago
37, 18 is the correct answer.
21 + 4 = 25.
25 + 4 = 29.
29 + 4 = 33.
33 + 4 = 37.
21 + 4 = 25.
25 + 4 = 29.
29 + 4 = 33.
33 + 4 = 37.
(17)
Mohammad Nizam Pathan said:
2 years ago
I think option C is the correct answer.
(5)
Suman said:
4 years ago
In this case, 18 is repeated on the third place. So, 33+4=37, then 37+4=41 then it should be 18.
(6)
Chandu said:
4 years ago
21 + 4 = 25
25 + 4 = 29 then ( "" 18 is interpolated of 3rd nm)
33 + 4 = 37
37 + 4 = 41.
You will get 37,41 is the answer.
Leave 18, it is the common thing.
25 + 4 = 29 then ( "" 18 is interpolated of 3rd nm)
33 + 4 = 37
37 + 4 = 41.
You will get 37,41 is the answer.
Leave 18, it is the common thing.
(3)
Amit singh Rajput said:
5 years ago
Here, 21,25,18,29,33,18.
.
18 is interpolated as every third number,so the changed numbers should be after 18
21+4 = 25.
25+4 = 29.
29+4 = 33.
33+4 = 37.
37+4 = 41.
Therefore, the answer is 37 41.
Alternative
21,25,18,29,33,18,37,41,18 after 41 again 18 will come.
so according to series 37,41 is correct answer.
.
18 is interpolated as every third number,so the changed numbers should be after 18
21+4 = 25.
25+4 = 29.
29+4 = 33.
33+4 = 37.
37+4 = 41.
Therefore, the answer is 37 41.
Alternative
21,25,18,29,33,18,37,41,18 after 41 again 18 will come.
so according to series 37,41 is correct answer.
(1)
Ravi said:
5 years ago
Thank you for explaining @Amit.
Amit Kumar said:
6 years ago
21, 25,18,29,33,18.
25 - 21 = 4.
keep 18 as that is;
33 - 29 = 4.
again keep 18 as that is;
now , let the next number is X.
then X - 33 = 4.
so , X = 37.
And next term will be X + 4 = 37 + 4 = 41.
18 is repeating after 2 step . so next term will be 18.
Series = 21 , 25 , 18 ,29 ,33, 18 , 37 ,41 , 18.
25 - 21 = 4.
keep 18 as that is;
33 - 29 = 4.
again keep 18 as that is;
now , let the next number is X.
then X - 33 = 4.
so , X = 37.
And next term will be X + 4 = 37 + 4 = 41.
18 is repeating after 2 step . so next term will be 18.
Series = 21 , 25 , 18 ,29 ,33, 18 , 37 ,41 , 18.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers