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.
Rutvij said:
1 decade ago
50 is also a Right answer. This Series follows multiple patterns!
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???
Pundrik Vinayak said:
1 decade ago
14 28 20 40 32 64 56 112..
14*2=28 14+6=20 20*2=40 20+(12)=32 32*2=64
32+24=56 56*2=122..........
14*2=28 14+6=20 20*2=40 20+(12)=32 32*2=64
32+24=56 56*2=122..........
Jack said:
1 decade ago
+14
-8
+20
-8
+32
-8
-8
+20
-8
+32
-8
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)
Pavan said:
1 decade ago
@P.Rajendran..thought of the same thing but the ans isn't there in the options...
Nikhila said:
1 decade ago
Ya its ok with procedure. But why should we take the nums 2 and 8?
Vijender said:
1 decade ago
s1:14,20,32,n,n1.......
s2:2*14,2*20,2*32,m,m1
20-14=6*1
32-20=6*2
ans:
s1:
n=32+6*2*2=32+24=56
s2=s1*2
m=n*2=56*2=112
series:
s1:14,20,32,56,
s2:2*14,2*20,2*32,112,
series:
s2:14, 28, 20, 40, 32, 64, 56,112
s2:2*14,2*20,2*32,m,m1
20-14=6*1
32-20=6*2
ans:
s1:
n=32+6*2*2=32+24=56
s2=s1*2
m=n*2=56*2=112
series:
s1:14,20,32,56,
s2:2*14,2*20,2*32,112,
series:
s2:14, 28, 20, 40, 32, 64, 56,112
PERNI .RAMBABU said:
1 decade ago
14
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
PANKAJ RIYAR 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
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