Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 1 (Q.No. 19)
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
19.
Look at this series: 8, 6, 9, 23, 87 , ... What number should come next?
Answer: Option
Explanation:
8 x 1 - 2 = 6
6 x 2 - 3 = 9
9 x 3 - 4 = 23
23 x 4 - 5 = 87
87 x 5 - 6 = 429 ...
Discussion:
125 comments Page 4 of 13.
Manoj said:
9 months ago
Very helpful. Good to practice. Thanks.
(2)
Aadarsh Yadav said:
8 months ago
The series logic starts with the pattern: 6, 9, 23, 87.
(2)
Sowmyareddy said:
7 months ago
Thanks for explaining the answer.
(2)
Suri said:
1 month ago
429 is the correct answer.
(2)
Varaprasad said:
1 decade ago
Only this question is thinkable one while compare to others.
(1)
Aayush said:
6 years ago
Solution : 8 x 1 - 2 = 6,
6 x 2 - 3 = 9,
9 x 3 - 4 = 23,
23 x 4 - 5 = 87,
87 x 5 - 6 = 429.
6 x 2 - 3 = 9,
9 x 3 - 4 = 23,
23 x 4 - 5 = 87,
87 x 5 - 6 = 429.
(1)
Akshara said:
5 years ago
You can understand this problem by understanding the relation between 9, 23 as shown in the solution 9'-3-4=23, and later you check the remaining numbers by using this method.
If it suitable for every number before 9 then you can do this with 87.
If it suitable for every number before 9 then you can do this with 87.
(1)
Prateek said:
5 years ago
Thanks @Akshara.
(1)
Loki said:
12 months ago
Nice explanation, Thanks all.
(1)
Iltja said:
11 months ago
Nice, very good for practice.
(1)
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