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 5 of 9.
Milan said:
6 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:
6 years ago
14+6 = 20.
20+(6*2) = 32.
32+24 = 56.
20+(6*2) = 32.
32+24 = 56.
Mehvish said:
2 weeks ago
= 14 → 28 (×2)
= 28 → 20 (−8)
= 20 → 40 (×2)
= 40 → 32 (−8)
= 32 → 64 (×2).
So, the pattern alternates between ×2 and −8.
Next step should follow the same alternation:
After ×2 → −8.
So, 64 − 8 = 56.
= 28 → 20 (−8)
= 20 → 40 (×2)
= 40 → 32 (−8)
= 32 → 64 (×2).
So, the pattern alternates between ×2 and −8.
Next step should follow the same alternation:
After ×2 → −8.
So, 64 − 8 = 56.
Jack said:
1 decade ago
+14
-8
+20
-8
+32
-8
-8
+20
-8
+32
-8
Harpreet kaur said:
1 decade ago
14+14=28.
28-8=20.
20+20=40.
40-8=32.
32+32=64.
64-8=56.
28-8=20.
20+20=40.
40-8=32.
32+32=64.
64-8=56.
Neha Ramteke said:
1 decade ago
The series is : 14 28 20 40 32 64
14+6=20
20+12=32
32+24=56
28+12=40
40+24=64
Each time the number doubles
i.e first we add 6
Then double of 6 i.e 12
After that we double 12 i.e 24..
In this way, we can get the answer.
14+6=20
20+12=32
32+24=56
28+12=40
40+24=64
Each time the number doubles
i.e first we add 6
Then double of 6 i.e 12
After that we double 12 i.e 24..
In this way, we can get the answer.
ASAD said:
1 decade 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
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
Sufi_azmat said:
1 decade ago
14,28,20,40,32,64,x
*2
-8
*2
-8
*2
-8
*2
-8
*2
-8
*2
-8
Pravesh bansal said:
1 decade ago
If we see odd place of this series then we find every digit is increase by adding table of 6 like
14+6=20
20+12=32 now the ans is
32+18=50
So the right answer is 50.
14+6=20
20+12=32 now the ans is
32+18=50
So the right answer is 50.
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