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
9, 27, 36, 63, 99, ?
(a) 167
(b) 162
(c) 151
(d) 152
e) 157
The correct answers to the above question in:
Answer: (b)
Here,
9 + 27 = 36
27 + 36 = 63
36 + 63 = 99
63 + 99 = 162.
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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 series?
10, 14, 25, 55, 140, (?)
a) 398
b) 396
c) 386
d) 388
e) None of these
Answer »Answer: (d)
The series is as follows:
× 3 – 16, × 3 – 17, × 3 – 20, × 3 – 25, × 3 – 32
Hence, ? = 140 × 3 – 32 = 388
Question : 2
What should come in place of the question mark (?) in the following number series?
2, 4, ?, 16, 32
a) 10
b) 12
c) 6
d) 8
e) None of these
Answer »Answer: (d)
The terms exhibit the pattern $2^1$, $2^2$, $2^3$ and so on.
Question : 3
What should come in place of the question mark (?) in the following number series?
24, 49, ?, 94, 15, 31, 59, 58
a) 63
b) 95
c) 51
d) 77
e) None of these
Answer »Answer: (b)
It is a combination of two series, namely
24, 49, ?, 94; and 15, 31, 59, 58
The two series correspond to
x, (2x + 1), (4x – 1), (4x – 2)
Hence the missing term is
4 x 24 – 1 = 95
Question : 4
What should come in place of the question mark (?) in the following number series?
0, 7, 26, ?, 124, 215
a) 51
b) 88
c) 37
d) 63
e) None of these
Answer »Answer: (d)
Try the pattern $n^3$ – 1. n = 1, 2, .......
Question : 5
Only one number is wrong in the following number series. Find out the wrong number.
2, 54, 300, 1220, 3674, 7350
a) 1220
b) 54
c) 3674
d) 300
e) None of these
Answer »Answer: (c)
The series is
× 6 + 42, × 5 + 30, × 4 + 20, × 3 + 12, × 2 + 6,
The wrong number is 3674
It should be 1220 × 3 + 12 = 3672
Question : 6
What should come in place of the question mark (?) in the following number series?
8, 20, 50, 125, ?, 781.25
a) 295.5
b) 312.5
c) 300
d) 315
e) None of these
Answer »Answer: (b)
The pattern of the series is as follows :
8 × 2.5 = 20
20 × 2.5 = 50
50 × 2.5 = 125
∴ ? = 125 × 2.5 = 312.5
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