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:
116 comments Page 5 of 12.
Shaffi said:
1 decade ago
Very sad how can we understand this one?
Abhishek said:
1 decade ago
Very easy series are there.
Kanhu said:
1 decade ago
8*1-2 = 6.
6*2-3 = 9.
9*3-4 = 23.
23*4-5 = 87.
87*5-6 = 429.
6*2-3 = 9.
9*3-4 = 23.
23*4-5 = 87.
87*5-6 = 429.
Aman said:
1 decade ago
It was easy:
8x1-2 = 6.
6x2-3 = 9.
9x3-4 = 23.
23x4-5 = 87.
87x5-6 = 429.
It was easy question just think in other order.
8x1-2 = 6.
6x2-3 = 9.
9x3-4 = 23.
23x4-5 = 87.
87x5-6 = 429.
It was easy question just think in other order.
Anu said:
10 years ago
Are there other questions like this on this site?
VARUN said:
10 years ago
Very easy:
8*1 = 8-2 = 6.
6*2 = 12-3 = 9.
9*3 = 27-4 = 23.
23*4 = 92-5 = 87.
87*5 = 435-6 = 429.
So answer is 429.
8*1 = 8-2 = 6.
6*2 = 12-3 = 9.
9*3 = 27-4 = 23.
23*4 = 92-5 = 87.
87*5 = 435-6 = 429.
So answer is 429.
Stephan said:
10 years ago
8 + 6 + 9 = 23 threw me off. Didn't come up with the solution. By far the hardest in the collection.
Devender said:
10 years ago
Can't understand this question please help?
Goutam roy said:
10 years ago
Then where the 8 come from.
Here. 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.
Then what is the logic for "8".
6 is not the first number here. 8 is the first number.
Here. 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.
Then what is the logic for "8".
6 is not the first number here. 8 is the first number.
Arthi said:
10 years ago
Solve this 1, 8, 27, ?.
a) 37 b) 47 c) 51 d) 64
Here d) 64 is the right answer. How? Please explain anyone.
a) 37 b) 47 c) 51 d) 64
Here d) 64 is the right answer. How? Please explain anyone.
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