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.
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.
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.
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.
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.
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.
Roshan Roy said:
9 years ago
The formula is first multiply by 2 then subtract by 8 :
14 x 2 = 28.
28 - 8 = 20.
20 x 2 = 40.
40 - 8 = 32.
32 x 2 = 64.
Since 64 - 8 = 56.
Therefore the answer is B. 56.
14 x 2 = 28.
28 - 8 = 20.
20 x 2 = 40.
40 - 8 = 32.
32 x 2 = 64.
Since 64 - 8 = 56.
Therefore the answer is B. 56.
Roshan Roy said:
10 years ago
This is an multiplication and subtracting series: First, multiply by 2 and then subtract 8.
Chanakya said:
10 years ago
14, 20, 32.
14 + 6 = 20.
(6 + 6 = 12) 20 + 12 = 32.
(12 + 12 = 24) 32 + 24 = 56.
14 + 6 = 20.
(6 + 6 = 12) 20 + 12 = 32.
(12 + 12 = 24) 32 + 24 = 56.
Ram Karthick said:
10 years ago
1st no + with same = (Answer - 8).
14, 28 (14+14), (28-8) 20, 40 (20+20), (40-8) 32, 64 (32+32) = 56 (64-8).
14, 28 (14+14), (28-8) 20, 40 (20+20), (40-8) 32, 64 (32+32) = 56 (64-8).
Subhankar said:
10 years 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.
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