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:
189 comments Page 15 of 19.
Daniel said:
1 decade ago
The series is geometric progression.
a2 divide by a1 so 1/2 and a3 by a2 so 1/2/1/1.
So the comment ratio is 1/2.
2, 1, 1/2, 1/4, 1/8.
a2 divide by a1 so 1/2 and a3 by a2 so 1/2/1/1.
So the comment ratio is 1/2.
2, 1, 1/2, 1/4, 1/8.
Jass sukhana said:
1 decade ago
Its very simple guys. Just need to be looking carefully.
Basavaraj said:
1 decade ago
That's simple friends it is 1/8.
Mostafiz said:
1 decade ago
How does it possible?
Manisha said:
1 decade ago
4*1/2 = 2.
2*1/2 = 1.
1*1/2 = 1/2.
1/2*1/2 = 1/4.
1/4*1/2 = 1/8.
2*1/2 = 1.
1*1/2 = 1/2.
1/2*1/2 = 1/4.
1/4*1/2 = 1/8.
Bank po said:
1 decade ago
Someone help me to find the next digit of the series 2, 6, 4, 12, 10.
Yanmar said:
1 decade ago
1/3=1.
1/4=2.
1/5=3.
1/6=4 and so on.
1/4=2.
1/5=3.
1/6=4 and so on.
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.
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