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:
129 comments Page 7 of 13.
Guruprasad said:
1 decade ago
Given pro having 8, 6, 9, 23, 87.
We have to do,
8*1 = 8-2 = 6,(8 is the given no, it is in 1 place so 8*1=8 we want next no in the given series we have to subtract 8-2=6).
We follow this method remains all.
We have to do,
8*1 = 8-2 = 6,(8 is the given no, it is in 1 place so 8*1=8 we want next no in the given series we have to subtract 8-2=6).
We follow this method remains all.
Manoj tetwar said:
1 decade ago
No one can predict what comes next, if the series is given like this and the rest of the questions are good but very easy.
Ram babu said:
1 decade ago
One said that by adding the first 3 no's we can get 4th and adding next 3 no's we get 6th but it's wrong. Because if we follow this how we can get 2nd and 3rd no's.
Suranjika Muni said:
1 decade ago
This is good process through which one will improve his/her mental ability.
Suresha c n said:
1 decade ago
Is any other easy way except mentioned above all?
Atul said:
1 decade ago
25*02+15+54-25*15/25.
Narendra Padhan said:
1 decade ago
It is the best method of develop your knowledge.
Nityusha said:
1 decade ago
Any other simpler way?
Gaurav Sharma said:
1 decade ago
So easy but starting point is very tough.
Amit said:
1 decade ago
I have solved all series problems its very easy only two problems are moderate.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers