# Quantitative Aptitude: Number Series Set 2

Directions: What will come in place of (?) in the following series which follows a particular pattern?

1. 7, 5, 7, 17, 63, 309, ?
A) 1639
B) 1847
C) 1750
D) 1829
E) 1689
B) 1847
Pattern:

7*1 â€“ 2, 5*2 â€“ 3, 7*3 â€“ 4, 17*4 â€“ 5, 63*5 â€“ 6, 309*6 â€“ 7
2. 10, 68, 222, 520, 1010, ?
A) 1950
B) 1840
C) 1740
D) 1010
E) None of these
C) 1740
Pattern:

2^3 + 2, 4^3 + 4, 6^3 + 6, 8^3 + 8, 10^3 + 10
3. 168, 120, 80, 48, ?, 8
A) 30
B) 12
C) 14
D) 24
E) 29
D) 24
Pattern:

132 â€“ 1, 112 â€“ 1, 92 â€“ 1, 72 â€“ 1, 52 â€“ 1, 32 â€“ 1
4. 5, 7, 17, 31, 65, ?
A) 95
B) 115
C) 102
D) 127
E) 150
D) 127
Pattern:

5*2 â€“ 3, 7*2 + 3, 17*2 â€“ 3, 31*2 + 3, 65*2 – 3
5. 10, 15, 28, 49, 78, ?
A) 122
B) 102
C) 117
D) 136
E) None of these
E) None of these
Pattern:

15-10 = 5, 28-15 = 13, 49-28 = 21, 78-49 = 29
13-5 = 8, 21-13 = 8, 29-21 = 8
So next number is 78+29+8 = 115
6. 12, 24, 27, 54, 57, ?
A) 116
B) 106
C) 114
D) 122
E) 146
C) 114
Pattern:

12*2, 24+3, 27*2, 54+3, 57*2
7. 3, 18, 33, 68, 95, ?
A) 168
B) 159
C) 162
D) 150
E) 177
D) 150
Pattern:

22 – 2/2, 42 + 4/2, 62 – 6/2, 82 + 8/2, 102 – 10/2, 122 + 12/2
8. 16, 41, 61, 85, ?, 145
A) 124
B) 167
C) 119
D) 113
E) 185
D) 113
Pattern:

4^2, 4^2 + 5^2, 5^2 + 6^2, 6^2 + 7^2,â€¦.
9. 25, 13, 21, 55, 196, ?
A) 892.5
B) 942.5
C) 758.5
D) 828.5
E) 886.5
E) 886.5
Pattern:

Ã—0.5 + 0.5, Ã—1.5 + 1.5, Ã—2.5 + 2.5, Ã—3.5 + 3.5, Ã—4.5 + 4.5,
10. 16, 43, 98, 209, ?, 879
A) 428
B) 432
C) 386
D) 422
E) 396
B) 432
Pattern:

Ã—2 + 11, Ã—2 + 12, Ã—2 + 13, Ã—2 + 14, Ã—2 + 15,

## 5 Thoughts to “Quantitative Aptitude: Number Series Set 2”

1. alka singh

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2. sachin shukla@ my turn 2017

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1. priya

8th Bata dijiye kaise kiya apne

1. its addition of squares as given

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