Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 1 (Q.No. 12)
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
12.
Look at this series: 14, 28, 20, 40, 32, 64, ... What number should come next?
Answer: Option
Explanation:
This is an alternating multiplication and subtracting series: First, multiply by 2 and then subtract 8.
Discussion:
86 comments Page 2 of 9.
Aarushi said:
4 years ago
14*2 = 28 - 8 = 20,
20*2 = 40 - 8 = 32,
32*2 = 64 - 8 = 56.
20*2 = 40 - 8 = 32,
32*2 = 64 - 8 = 56.
(2)
Tirtha Datta said:
5 years ago
14 * 2 = 28,
(14 + 6) * 2 = 40,
(20 + 12) * 2 = 64,
(32 + 24) * 2 = 122.
(14 + 6) * 2 = 40,
(20 + 12) * 2 = 64,
(32 + 24) * 2 = 122.
(1)
Nitish Pandey said:
8 years ago
I think the answer must be 128.
14*2=28.
20*2=40.
32*2=64.
64*2=128.
14*2=28.
20*2=40.
32*2=64.
64*2=128.
Shadab Akhtar said:
10 years ago
@Sangita you are wrong as you are not making any relation with the previous one.
@Ladani your answer is right but your procedure is wrong.
The method to get the solution is:
14 * 2 = 28.
28 - 8 = 20.
20 * 2 = 40.
40 - 8 = 32.
32 * 2 = 64.
64 - 8 = 56.
@Ladani your answer is right but your procedure is wrong.
The method to get the solution is:
14 * 2 = 28.
28 - 8 = 20.
20 * 2 = 40.
40 - 8 = 32.
32 * 2 = 64.
64 - 8 = 56.
Bhavana said:
8 years ago
14*2=28.
28-8=20.
20*2=40.
40-8=32.
32*2=64.
64-8=56.
28-8=20.
20*2=40.
40-8=32.
32*2=64.
64-8=56.
ASWATH G said:
8 years ago
Answer is 56 only. I agree.
Raj said:
8 years ago
@Aswath.
Why 50 is not an answer? I still can't understand. Can someone explain this to me?
Why 50 is not an answer? I still can't understand. Can someone explain this to me?
KARTHICKRAJA said:
8 years ago
14 28 - Difference is 8 (28-8=20)
20 40 - Difference is 8 (40-8=32)
32 64 - Difference is 8 (64-8=56)
So, 56.
20 40 - Difference is 8 (40-8=32)
32 64 - Difference is 8 (64-8=56)
So, 56.
Nikhilaadarsa said:
8 years ago
Why 128 is not an answer? I still can't understand. Can someone explain this to me?
Vishal said:
8 years ago
I calculated 50 the next term. It is not matched. It is too difficult when a series has multiple answers.
14 - 20 - 32 - 50.
6 12 18.
14 - 20 - 32 - 50.
6 12 18.
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