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:
85 comments Page 5 of 9.
Arnab said:
9 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.
Ajay said:
9 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.
Sushant said:
9 years ago
Check let us take alternate no 14, 20, 32.
First . 14+6 = 20.
20+12= 32.
32+24 = 56.
So answer 56.
First . 14+6 = 20.
20+12= 32.
32+24 = 56.
So answer 56.
Sangita said:
9 years ago
My answer is 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.
Ladani Namrata said:
9 years ago
My Answer = 56.
14 + 6 = 20,
20 + (6*2) = 32.
32 + (12*2) = 56.
14 + 6 = 20,
20 + (6*2) = 32.
32 + (12*2) = 56.
Shadab Akhtar said:
9 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.
K.sujitha said:
9 years ago
14 + 6 = 20,
20 + 12 = 32,
32 + 24 = 56.
20 + 12 = 32,
32 + 24 = 56.
M.RAGHURAM PGDM 1 said:
9 years ago
Take double of the number and alternatively take difference 8. So the answer is 56.
Jhansi said:
9 years ago
The alternative numbers are Multiplied by 2 and subtract from 8.
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).
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