Number Series Model Questions Set 1 Practice Questions Answers Test with Solutions & More Shortcuts
Number Series PRACTICE TEST [2 - EXERCISES]
Number Series Model Questions Set 1
Number Series Model Questions Set 2
Question : 6
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 : 7
What should come in place of the question mark (?) in the following number serie?
4, 16, 36, 64, 100, ?
a) 180
b) 144
c) 120
d) 136
e) None of these
Answer »Answer: (b)
The series is as follows
$(2)^2$, $(4)^2$, $(6)^2$, $(8)^2$, $(10)^2$, $(12)^2$
Hence, ? = $(12)^2$ = 144
Question : 8
What should come in place of the question mark (?) in the following number serie?
250, 100, 40, ?, 6.4, 2.56
a) 20
b) 12
c) 16
d) 24
e) None of these
Answer »Answer: (c)
The given number series is based on the following pattern:
$250_{÷2.5}$ $100_{÷2.5}$ $40_{÷2.5}$ $16_{÷2.5}$ $6.4_{÷2.5}$ 2.56
Hence, the number 16 will replace the question mark.
Question : 9
Only one number is wrong in the following number series. Find out the wrong number.
48, 72, 108, 162, 243, 366
a) 108
b) 243
c) 72
d) 162
e) None of these
Answer »Answer: (e)
The series is × 1.5
The wrong number is 366
It should be 243 × 1.5 = 364.5
Question : 10
What should come in place of the question mark (?) in the following number series?
4, 15, 16, ?, 36, 63, 64
a) 30
b) 35
c) 25
d) 32
e) None of these
Answer »Answer: (b)
Pattern is $2^2$, $4^2$ – 1,$4^2$, $6^2$ – 1, $6^2$ and so on.
IMPORTANT quantitative aptitude EXERCISES
Number Series Model Questions Set 1 Online Quiz
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