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?
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 15 of 19.
Papu said:
1 decade ago
Answer can solve in this step 1/2*1/4*1/8*1/16 in this type.
Jeevagan said:
1 decade ago
It's not that big issue.!
First look at the series then start relating between them.
Ex:
Here in the series 2, 1, 1/2, 1/4,....
Just by first analysis we can conclude that next no. To 1st no is half time to it, and the logic is checked with next successive no.
Step 1:- 2,
Step 2:- 2, 1==>2, 2/2 (1),...
Step 3:- 2, 1, 1/2==>2, 2/2 (1) , 1/2 (1/2),....
Step 4:- 2, 1, 1/2, 1/4==>2, 2/2 (1), 1/2 (1/2) , (1/2) /2 (1/4),...
First look at the series then start relating between them.
Ex:
Here in the series 2, 1, 1/2, 1/4,....
Just by first analysis we can conclude that next no. To 1st no is half time to it, and the logic is checked with next successive no.
Step 1:- 2,
Step 2:- 2, 1==>2, 2/2 (1),...
Step 3:- 2, 1, 1/2==>2, 2/2 (1) , 1/2 (1/2),....
Step 4:- 2, 1, 1/2, 1/4==>2, 2/2 (1), 1/2 (1/2) , (1/2) /2 (1/4),...
Shubhi said:
1 decade ago
Very easy just half and divided by 2 like in:
Step 1: Take a no 4 itself.
4/2 = 2.
Step 2: After that half the number, so 4/2 = 2 and then divide by 2.
2/2 = 1.
Step 3:
1/2 = 1/2.
(1/2)/2 = 1/4.
(1/4)/2 = 1/8 and so on.
Step 1: Take a no 4 itself.
4/2 = 2.
Step 2: After that half the number, so 4/2 = 2 and then divide by 2.
2/2 = 1.
Step 3:
1/2 = 1/2.
(1/2)/2 = 1/4.
(1/4)/2 = 1/8 and so on.
Shahbaz Ahmad Naik said:
1 decade ago
Sometimes the answers are very simple but due to unconfidancial we does not give it.
Amiya said:
1 decade ago
Why first come 4/2 not other? I can't under stand.
Ragu said:
1 decade ago
I am not understand your explanations about 1/8.
Atif said:
1 decade ago
I am not understand your all explanations about 1/2, 1/4 and 1/8.
Jitendra sawwalakhe said:
1 decade ago
we know that,the above no.decrease in order so,
2
1
1/2 = 0.5
1/4 = 0.25
1/8 = 0.125. So answer = 1/8.
2
1
1/2 = 0.5
1/4 = 0.25
1/8 = 0.125. So answer = 1/8.
Venkatrao said:
1 decade ago
Simple interest formulas and how to solve the problems.
Bipin said:
1 decade ago
What is the no. series of the question.
3 , 34 , 192 , 782, ? , 1566
3 , 34 , 192 , 782, ? , 1566
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