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:
36 comments Page 2 of 4.
Aathreya said:
10 years ago
The difference between two numbers before 18 is 4, 18 appears on 3, 6, 9 positions, then the answer is 37, 41.
(1)
Anirban roy chowdhury said:
7 years ago
37,41 is the right.
Because 21+8, 25+8, 18.
29+8, 33+8, 18.
37 41, 18.
So, the answer is 37, 41, 18.
Because 21+8, 25+8, 18.
29+8, 33+8, 18.
37 41, 18.
So, the answer is 37, 41, 18.
(1)
Amit Kumar said:
7 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.
Ravi said:
6 years ago
Thank you for explaining @Amit.
Navin said:
8 years ago
How 37, 41 came? According to me, the answer is 37, 18.
Pranita said:
8 years ago
21+8=29,
25+8=33,
18,
29+8=37,
33+8=41,
18.
Add 8 to each number except 18.
25+8=33,
18,
29+8=37,
33+8=41,
18.
Add 8 to each number except 18.
Manjoy said:
2 years ago
Why 18 is not arrived at the next number? Anyone please clarify the answer in detail?
Vedita said:
9 years ago
(21+4), 18 = 25,18
(25+4), 18 = 29,18
(29+4), 18 = 33,18
(33+4),18 = 37,18
So the answer is 37, 18.
(25+4), 18 = 29,18
(29+4), 18 = 33,18
(33+4),18 = 37,18
So the answer is 37, 18.
Abhishek said:
8 years ago
21+4=25.
25-7=18.
18+11(7+11)=29.
29+4=33.
33-15=18.
18+19(15+4)=37.
37+4=41.
25-7=18.
18+11(7+11)=29.
29+4=33.
33-15=18.
18+19(15+4)=37.
37+4=41.
Sravani mantripragada said:
1 decade ago
It is shown that 18 is at 3rd position in series 37, 18 (wrong because there 18 is not in the 3rd position) hence 37+4 = 41.
Hope understand!
Hope understand!
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