Logical Reasoning - Number Series - Discussion

Discussion Forum : Number Series - Type 1 (Q.No. 1)
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

1.
Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?
(1/3)
(1/8)
(2/8)
(1/16)
Answer: Option
Explanation:

This is a simple division series; each number is one-half of the previous number.

In other terms to say, the number is divided by 2 successively to get the next result.

4/2 = 2
2/2 = 1
1/2 = 1/2
(1/2)/2 = 1/4
(1/4)/2 = 1/8 and so on.

Discussion:
182 comments Page 11 of 19.

Nitish pandey said:   8 years ago
Am not getting it please explain.

Santosh goswami said:   8 years ago
I am not getting this, Please explain this.

Bhavana said:   8 years ago
Let the given series is A, B, C, D. If we divide D/C OR C/B OR B/A (in the order of the series, we get 1/2).

That shows A * 1/2 =B AND B * 1/2 = C.
SO,THE NEXT TERM IS D*1/2 = 1/4*1/2 = 1/8.

Ankit said:   8 years ago
Thank you for the given explanations.

Saran said:   8 years ago
I can't understand this. Give me the explanation clearly.

Pratheep said:   8 years ago
Really nice. Thanks for the given explanation.

Julius said:   9 years ago
What is the meaning of this sign ^?

Please tell me correctly.

Bhanu said:   9 years ago
It's very tough to identify the series. How to find it? Please give me the shortcut.

Sumeet said:   9 years ago
In simple 2^1, 2^0, 2^-1, 2^-2, 2^-3, ... and we get 2 ,1, (1/2), (1/4), (1/8) and so on.

Shubham said:   9 years ago
Can anyone help me in finding the next number.

1) 4,9,10,21,22,39,34,57, ?
2) 15,105,315,693,1287, ?
3) 3,20,63,144, 275, ?


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