Number Series Model Questions Set 1 Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 2 EXERCISES
The following question based on Number Series topic of quantitative aptitude
12, 14, 32, 102, 416, 2090, ?
(a) 12552
(b) 17552
(c) 15522
(d) 13525
e) None of these
The correct answers to the above question in:
Answer: (a)
The series is as follows
×1 + 2, ×2 + 4, ×3 + 6, ×4 + 8, × 5 + 10, × 6 + 12...
Hence, ? = 2090 × 6 + 12 = 12552
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Read more model questions set 1 Based Quantitative Aptitude Questions and Answers
Question : 1
What should come in place of the question mark (?) in the following number serie?
70000, 14000, 2800, ?, 112, 22.4
a) 420
b) 540
c) 640
d) 560
e) None of these
Answer »Answer: (d)
The series is as follows:
÷ 5
Hence, ? = 2800 ÷ 5 = 560
Question : 2
What should come in place of the question mark (?) in the following number series?
8, 15, 28, 53, ?
a) 98
b) 102
c) 106
d) 100
e) None of these
Answer »Answer: (b)
Let x = 8
then 15 = 2x – 1 = y
28 = 2y – 2 = z
53 = 2z – 3 = m
Next term in the pattern should be
2m – 4 = 2 × 53 – 4
= 102
Question : 3
What should come in place of the question mark (?) in the following number serie?
12, 6.5, 7.5, 12.75, 27.5, 71.25, ?
a) 216.75
b) 236.75
c) 225.75
d) 209.75
e) 249.75
Answer »Answer: (a)
The given number series is based on the following pattern:
12 × 0.5 + 0.5 = 6.5
6.5 × 1 + 1 = 7.5
7.5 × 1.5 + 1.5 = 12.75
12.75 × 2 + 2 = 27.5
27.5 × 2.5 + 2.5 = 71.25
∴ ? = 71.25 × 3 + 3
= 213.75 + 3 = 216.75
Hence, 216.75 will replace the question mark.
Question : 4
What should come in place of the question mark (?) in the following number serie?
1, 3, 24, 360, 8640, 302400, ?
a) 154152000
b) 15425100
c) 14525100
d) 14515200
e) None of these
Answer »Answer: (d)
The series is as follows
×3, ×8, × 15, ×24, ×35, ×48
Hence, ? = 302400 × 48
= 14515200
Question : 5
Only one number is wrong in the following number series. Find out the wrong number.
4, 6, 18, 49, 201, 1011
a) 201
b) 49
c) 1011
d) 18
e) None of these
Answer »Answer: (d)
The series is
× 1 + 2, × 2 + 3, × 3 + 4, × 4 + 5, × 5 + 6
The wrong number is 18.
It should be 6 × 2 + 3 = 15
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