IBM aptitude questions
311 / 438
What comes next in the sequence?
3, 2, 1, 4, 5, 4, 5, 1, 0, 6, 3, 2, ?
A6
B7
C0
D5
Answer: Option B
Explanation:Break series as below
3, |2, 1, |4 |, 5, 4,| 5 |, 1, 0,| 6 |, 3, 2, |?|
2-1=1
5-4=1
1-0=1
3-2=1
?=7
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312 / 438
What comes next in the sequence? 5,1,2,8,1,0,9,2,3,14,1.3,2
A17
B17.3
C16.3
DNone of these
Answer: Option B
Explanation:5+1+2=8
8+1+0=9
9+2+3=14
14+1.3+2=17.3
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313 / 438
What comes next in the sequence?
96, 64, 128, 192, 128, 256, 288, 192, ?
A128
B284
C384
D380
Answer: Option C
Explanation:(96,64,128)
96-64=32 , 32*2=64 , now 64+64=128
(192,128,256)
192-128=64 , 64*2=128 , now 128+128=256
(288,192,?)
288-192=96 , 96*2=192 , now 192+192=384
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314 / 438
What comes next in the sequence? 2, 3, 10, 15, 26, 35,50, ?
A56
B65
C63
D55
Answer: Option C
Explanation:(1*1)+1=2
(2*2)-1=3
(3*3)+1=10
(4*4)-1=15
(5*5)+1=26 (6*6)-1=35 (7*7)+1=50
(8*8)-1=63
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315 / 438
What comes next in the sequence? .7 , 1.2, 1.2 , 2.2 , 1.7, 3.2, 2.2, 4.2 , ?
A3
B1.7
C5.6
D2.7
Answer: Option D
Explanation:Every alternate (od number increases by .5 each time
1st = 0.7, 3rd = 1.2, 5th = 1.7, 7th = 2.2, so 9th would be 2.7
Every alternate (even) number increases by 1:
2nd = 1.2, 4th = 2.2, 6th = 3.2, 8th = 4.2, so 10th would be 5.2
so the number in the series is 2.2 +0.5 = 2.7 so ans is
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316 / 438
What comes next in the sequence? 7.2, 2.2, 3.2, 16, 11, 12, 60, 55, 56
A89
B123
C280
D128
Answer: Option C
Explanation:7.2-5=2.2
2.2+1=3.2
3.2*5=16
16-5=11
11+1=12
12*5=60
60-5=55
55+1=56
56*5=280
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317 / 438
What comes next in the sequence?
115, 100, 86, 74, 65, 60
A61
B55
C56
D60
Answer: Option D
Explanation:115-100=-15
100-86=-14
86-74=-12
74-65=-9
65-60=-5
-15+1=-14
-14+2+-12
-12+3=-9
-9+4=-5
-5+5=0
So, 60+0=60
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318 / 438
What comes next in the sequence?
5, 1, 2, 8, 8, 1, 0, 9, 9, 2, 3
A14
B15
C11
D9
E12
Answer: Option A
Explanation:5+1+2=8
8+1+0=9
9+2+3=14
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319 / 438
What comes next in the sequence?
3,5,2,100,4,7,3,196,1,6,5,?
A144
B324
C121
D169
Answer: Option A
Explanation:Break the series as below
3,5,2,100 | 4,7,3,196 | 1,6,5,?
(3 + 5 + 2)^2 = 10^2 100
(4 + 7 + 3)^2 = 14^2 = 196
=>(1 + 6 + 5)^2 = 12^2 = 144
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320 / 438
What comes next in the sequence?
0,1,1,2,0.5,2,2,4,2,2,4,3,7,2,?
A4
B3.5
C3
D5
E6
Answer: Option B
Explanation:Break the series as below
0,1,1,2,0.5 | 2,2,4,2,2 | 4,3,7,2
0+1=1
1/2=0.5
2+2=4
4/2=2
4+3=7
7/2=3.5
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