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 8 of 9.
Yuvaraj said:
6 years ago
The solution is;
14*2=28, 28-8=20;.
20*2=40, 40-8=32;.
32*2=64, 64-8=56;.
14*2=28, 28-8=20;.
20*2=40, 40-8=32;.
32*2=64, 64-8=56;.
Milan said:
5 years ago
14, 28, 20, 40, 32, 64, (56)
14(+6)-->>20.
20(+12)-->>32.
32(+24)-->>56.
28(+12)-->>40.
40(+24)-->>64.
64(+48)-->>112.
14(+6)-->>20.
20(+12)-->>32.
32(+24)-->>56.
28(+12)-->>40.
40(+24)-->>64.
64(+48)-->>112.
Siddharth said:
5 years ago
14+6 = 20.
20+(6*2) = 32.
32+24 = 56.
20+(6*2) = 32.
32+24 = 56.
Tirtha Datta said:
4 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)
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)
Rishav Chakrabarti said:
4 years ago
Answer should be 128.
Explanation :
Sequence - 14 , 28 , 20 , 40 , 32 , 64.
If clearly examined we see;
28 = 14 x 2.
40 = 20 x 2.
60 = 32 x 2.
So the "x2" remains the same in all cases.
Hence the next number will be : 64 x 2 = 128.
Explanation :
Sequence - 14 , 28 , 20 , 40 , 32 , 64.
If clearly examined we see;
28 = 14 x 2.
40 = 20 x 2.
60 = 32 x 2.
So the "x2" remains the same in all cases.
Hence the next number will be : 64 x 2 = 128.
(17)
Mohammad saqib said:
3 years ago
There is double of ist number and subtracted by 8 which means
14+14=28-8=20,
20+20=40-8=32,
32+32=64-8=56.
Therefore 56, 112 will be the next pair
Therefore 56.
14+14=28-8=20,
20+20=40-8=32,
32+32=64-8=56.
Therefore 56, 112 will be the next pair
Therefore 56.
(8)
Nima dorji said:
3 years ago
Sir I didn't get it. Can anyone explain once more?
(5)
Mathi said:
3 years ago
50 is also the right answer.
(24)
PRIYANKA FEGDE said:
3 years ago
Alternately 14, 20, 32, 56.
14 + 6 = 20.
20 + 12 = 32.
32 + 24 = 56.
14 + 6 = 20.
20 + 12 = 32.
32 + 24 = 56.
(15)
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