Number Series Model Questions Set 2 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
10, 25, 50, 75, 75, 37.5, ?
(a) 3.2375
(b) 3.575
(c) 4.375
(d) 4.6275
e) None of these
The correct answers to the above question in:
Answer: (e)
The series is as follows
×2.5, ×2, ×1.5, ×1, ×0.5, ×0
Hence, ? = 37.5 × 0 = 0
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Read more model question set 2 Based Quantitative Aptitude Questions and Answers
Question : 1
What should come in place of the question mark (?) in the following number serie?
12, 12, 18, 45, 180, 1170, ?
a) 14675
b) 16756
c) 13485
d) 15890
e) 12285
Answer »Answer: (e)
The pattern of series is as follows :
12 × 1 = 12,
12 × 1.5 = 18, [0.5 + 1 = 1.5]
18 × 2.5 = 45, [1+ 1.5 = 2.5]
45× 4 = 180, [1.5 + 2.5 = 4]
180 × 6.5 = 1170, [2.5 + 4 = 6.5]
∴ ? = 1170 × 10.5 = 12285
Hence, 12285 will replace the question mark.
Question : 2
What should come in place of the question mark (?) in the following number series?
588, 587, 583, 574, 558, ?, 497
a) 543
b) 557
c) 545
d) 551
e) None of these
Answer »Answer: (e)
The series is as follows:
– $1^2$, – $2^2$, –$3^2$, – $4^2$, – $5^2$, – $6^2$
Hence, ? = 558 – $5^2$ = 533
Question : 3
What should come in place of the question mark (?) in the following number serie?
102, 104, 99, 97, 106, ?
a) 95
b) 94
c) 96
d) 100
e) None of these
Answer »Answer: (a)
The series is as follows
Question : 4
What should come in place of the question mark (?) in the following number series?
29, 23, ?, 17, 13, 11, 7
a) 21
b) 27
c) 19
d) 23
e) None of these
Answer »Answer: (c)
This is a series of prime numbers :
Question : 5
A wrong number is given in the following number series. Find out that wrong number.
7, 9, 16, 25, 41, 68, 107, 173
a) 16
b) 68
c) 107
d) 41
e) 25
Answer »Answer: (b)
The series is based on the following pattern :
7 + 9 = 16
9 + 16 = 25
16 + 25 = 41
25 + 41 = 66; 68
41 + 66 = 107
66 + 107 = 173
Clearly, 68 should be replaced by 66
Question : 6
What should come in place of the question mark (?) in the following number serie?
10, 17, 48, 165, 688, 3475, ?
a) 25670
b) 20892
c) 27584
d) 21369
e) None of these
Answer »Answer: (b)
The series is as follows
×1 + (7 × 1), ×2 + (7 × 2 ), × 3 + (7 × 3), ×4 + (7× 4), × 5 + (7 × 5), × 6 + (7 × 6)....
Hence, ? = 3475 × 6 + (7 × 6)
= 20892
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