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:
183 comments Page 11 of 19.
Haris said:
1 decade ago
Nice but how can we expect this logic as first number is 4.
Himanshu said:
1 decade ago
Just take a half of the number series.
1, 2 ...then,
2. 1/2 means 2/2 = 1;
3. 1/2 means 1/2/2 = 0.5/2 ( we can assume 1/2 as 0.5) = 1/4 and so on...
1, 2 ...then,
2. 1/2 means 2/2 = 1;
3. 1/2 means 1/2/2 = 0.5/2 ( we can assume 1/2 as 0.5) = 1/4 and so on...
Naveen said:
1 decade ago
5. 2, 4, 6, 5, 7, 9, 8, ?
Just add 2 up to 3 numbers and then subtract 1 from the third number.
2+2 = 4.
4+2= 6.
6-1 = 5.
5+2 = 7.
7+2 = 9.
9-1 = 8.
8+2 = 10.
10+2 = 12.
Just add 2 up to 3 numbers and then subtract 1 from the third number.
2+2 = 4.
4+2= 6.
6-1 = 5.
5+2 = 7.
7+2 = 9.
9-1 = 8.
8+2 = 10.
10+2 = 12.
Surbhi agrawal said:
1 decade ago
Look at this:
2 - 1 = 1.
1 - 1/2 = 1/2.
1/2 - 1/4 = 1/4 .
Now,
1/4 - 1/8 = 1/8.
So answer is 1/8.
2 - 1 = 1.
1 - 1/2 = 1/2.
1/2 - 1/4 = 1/4 .
Now,
1/4 - 1/8 = 1/8.
So answer is 1/8.
Kalyani said:
1 decade ago
It is:
2^1 = 2.
2^0 = 1.
2^-1 = 1/2.
2^-2 = 1/4.
2^-3 = 1/8.
2^1 = 2.
2^0 = 1.
2^-1 = 1/2.
2^-2 = 1/4.
2^-3 = 1/8.
Kishor.b.c said:
1 decade ago
Think logically you will get the answer.
Bipin said:
1 decade ago
What is the no. series of the question.
3 , 34 , 192 , 782, ? , 1566
3 , 34 , 192 , 782, ? , 1566
Venkatrao said:
1 decade ago
Simple interest formulas and how to solve the problems.
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.
Atif said:
1 decade ago
I am not understand your all explanations about 1/2, 1/4 and 1/8.
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