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 3 of 9.
Arnab said:
10 years ago
One more solution,
14, 28, 20, 40, 32, 64
It can be add 24 or 18.
14*2 = 28,
14+6 = 20,
20*2 = 40,
20+(6*2) = 32,
32*2 = 64,
Then 32+(6*4) = 56.
14, 28, 20, 40, 32, 64
It can be add 24 or 18.
14*2 = 28,
14+6 = 20,
20*2 = 40,
20+(6*2) = 32,
32*2 = 64,
Then 32+(6*4) = 56.
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.
Shine said:
1 decade ago
14, 28, 20, 40, 32, 64, ...X?
32- 20 = 12
20 - 14 = 6
Hence X - 32 = 24 i.e {6,12,24...}
Then = 32+ 24= 56
X = Answer is 56
32- 20 = 12
20 - 14 = 6
Hence X - 32 = 24 i.e {6,12,24...}
Then = 32+ 24= 56
X = Answer is 56
Arundhati biswas said:
9 years ago
14 * 2 = 28,
20 * 2 = 40,
32 * 2 = 64,
20 - 14 =6 and 32 - 20 = 12,
6 * 2 = 12,
12 * 2 = 24,
So that 32 + 24 = 56(answer).
20 * 2 = 40,
32 * 2 = 64,
20 - 14 =6 and 32 - 20 = 12,
6 * 2 = 12,
12 * 2 = 24,
So that 32 + 24 = 56(answer).
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.
Subhankar said:
1 decade ago
First number*2 = Second number.
Second number-8 = Third number.
14*2=28.
28-8=20.
20*2=40.
40-8=32.
32*2=64.
64-8=56.
Second number-8 = Third number.
14*2=28.
28-8=20.
20*2=40.
40-8=32.
32*2=64.
64-8=56.
Dheeraj said:
1 decade ago
14 28 20 40 32 64
14+6=20
20+12=32
32+18=50
28+12=40
40+24=64
64+36=100
The answer should be 50 100, why 56 112???
14+6=20
20+12=32
32+18=50
28+12=40
40+24=64
64+36=100
The answer should be 50 100, why 56 112???
Amit said:
1 decade ago
Why we subtract? Its simple multiplication in sequence.
14*2 = 28.
20*2 = 40.
32*2 = 64.
64*2 = 128.
Answer 128.
14*2 = 28.
20*2 = 40.
32*2 = 64.
64*2 = 128.
Answer 128.
KTS said:
1 decade ago
One more answer is possible. 50
14 , 28(14x2) , 20(14+6), 40(20x2), 32(20+6x20) , 64(32x2), 50(32+6x3), 100(50x2)
14 , 28(14x2) , 20(14+6), 40(20x2), 32(20+6x20) , 64(32x2), 50(32+6x3), 100(50x2)
Aditya Singh said:
2 years ago
Also, multiple of 6 are being added if you take alternate numbers.
14 + 6 = 20,
20 + 12 = 32,
32 + 24 = 56 Ans.
14 + 6 = 20,
20 + 12 = 32,
32 + 24 = 56 Ans.
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