Another Series based important questions for IBM placement preparation and Interview Preparation. Series Completion Questions are very important for IBM placements and interviews. With the help of this compilation you will surely perform well in IBM placement and Interviews.
1,3,4,5,13,2,3,4,22,1,2,3,?
1+3+4+5=13, 13+2+3+4=22, 22+1+2+3=28
48,24,35,7,16,8,75,15,80,?
(a) 8
(b) 4
(c) 40
(d) 20
Solution:
48/2=24 35/5=7
Question: What will be the next element?
5,10,9,3,6,5,4,8,7,7,?
(a) 12
(b) 9
(c) 14
(d) 23
Solution:
Since,
5*2=10 10-1=9
7, 4, 6, 3, 4.5, 1.5, 2.25, -0.75,?
(a) -3.25
(b) -1.125
(c) -4
(d) -1
Solution:
The series is:
7-3=4; 4*(3/2)=6
1/4, 1/4, 1/2, 3/2, 6, ?
(a) 1/6
(b) 30
(c) 8
(d) 1/8
Answer: (b)
Solution:
Series is: ¼ * 1= ¼
¼ * 2= ½
½ * 3= 3/2
3/2 * 4= 6
Therefore,
49,7,98,16,4,48,9,3,36,25,5,?
(a) 8
(b) 9
(c) 125
(d) 625
Answer: (c)
Solution:
Series is: 7^2,7,49*2
507, 169, 248, 62, 36, 12, 168, 42, 168, ?
(a) 56
(b) 80
(c) 69
(d) 96
Answer: (a)
Solution:
The series is: 507= 169*3,
248= 62*4
42*4=168,
1, 3, 1, 2.5, 5, 1, 4, 5, 4, 8, 7, ?
(a) 10
(b) 20
(c) 8.5
(d) 9.5
Answer: (d)
Solution:
The series is as follows:
1+3+1=5 /2=2.5
Therefore, 4+8+7=19 /2=9.5
Question: What will be the next element?
13, 24, 36, 23, 34, 56, ?
(a) 33
(b) 35
(c) 43
(c) 53
Answer: (a)
Solution: 13+10=23
23+10= 23
Therefore, 23+10= 33
Question: Select
correct option:
1, 3, 4, 8, 15, 27, ?
(a) 37
(b) 44
(c) 50
(d) 55
1, 3, 4, 8, 15, 27, ?
(a) 37
(b) 44
(c) 50
(d) 55
Answer: (c)
Solution:
1+3=4
1+3+4=8
3+4+8=15
4+8+15=27
8+15+27=50
1+3+4=8
3+4+8=15
4+8+15=27
8+15+27=50
Question: What will be the next element?
1,3,4,5,13,2,3,4,22,1,2,3,?
(a) 28
(b) 4
(c) 1
(d) 12
Answer: (a)
Solution:
1+3+4+5=13, 13+2+3+4=22, 22+1+2+3=28
Question: What will be the next element?
48,24,35,7,16,8,75,15,80,?
(a) 8
(b) 4
(c) 40
(d) 20
Solution:
48/2=24 35/5=7
16/2=8 75/5=15
80/2=40
Therefore the answer is 40.
Question: What will be the next element?
5,10,9,3,6,5,4,8,7,7,?
(a) 12
(b) 9
(c) 14
(d) 23
Solution:
Since,
5*2=10 10-1=9
3*2=6 6-1=5
4*2=8 8-1=7
Therefore, 7*2=14
Question: What will be the next element?
Question: What will be the next element?
7, 4, 6, 3, 4.5, 1.5, 2.25, -0.75,?
(a) -3.25
(b) -1.125
(c) -4
(d) -1
Solution:
The series is:
7-3=4; 4*(3/2)=6
6-3=3; 3*(3/2)=4.5
4.5-3=1.5; 1.5*(3/2)=2.25
Therefore,
2.25-3=-0.75; -0.75*(3/2)= -1.125
2.25-3=-0.75; -0.75*(3/2)= -1.125
Question: Replace ‘?’ with appropriate option:
1/4, 1/4, 1/2, 3/2, 6, ?
(a) 1/6
(b) 30
(c) 8
(d) 1/8
Answer: (b)
Solution:
Series is: ¼ * 1= ¼
¼ * 2= ½
½ * 3= 3/2
3/2 * 4= 6
Therefore,
6* 5= 30
Question: What will be the next element?
49,7,98,16,4,48,9,3,36,25,5,?
(a) 8
(b) 9
(c) 125
(d) 625
Answer: (c)
Solution:
Series is: 7^2,7,49*2
4^2, 4, 16*3
3^2, 3, 9*4
Therefore
5^2, 5, 25*5=125
Question: What will be the next element?
5^2, 5, 25*5=125
Question: What will be the next element?
507, 169, 248, 62, 36, 12, 168, 42, 168, ?
(a) 56
(b) 80
(c) 69
(d) 96
Answer: (a)
Solution:
The series is: 507= 169*3,
248= 62*4
12*3=36
42*4=168,
Therefore,
56*3=168
Question: What will be the next element?
56*3=168
Question: What will be the next element?