# Quantitative Aptitude: Number Series Questions – Set 52 (Odd One Out)

Directions: The following series are based on a specific pattern. One number in the series is wrong. Find that odd one out.

1. 2, 3, 2, 15, 42, 245, 1434
A) 3
B) 155
C) 42
D) 245
E) 1434
Option C
Pattern:
2 × 1 + 1² = 3
3 × 2 – 2² = 2
2 × 3 + 3² = 15
15 × 4 – 4² = 44
44 × 5 + 5² = 245
245 × 6 – 6² = 1434

2. 72, 74, 68, 80, 50, 90, 48
A) 74
B) 68
C) 80
D) 50
E) 90
Option D
Pattern:
………+2………..-6………..+12………..-20…………+30………..-42
……………+4………+6………….+8………….+10……………+12
3. 6, 6, 8, 14, 25, 46, 76
A) 8
B) 14
C) 25
D) 46
E) 76
Option C
Pattern:
6 + (12 – 1)  = 6
6 + (22 – 2)  = 8
8 + (32 – 3) = 14
14 + (42 – 4)  = 26
26 + (52 – 5)  = 46
46 + (62 – 6)  = 76
4. 18, 82, 35, 69, 44, 60, 51
A) 82
B) 35
C) 69
D) 44
E) 60
Option B
Pattern:
+ 8², – 7², + 6², – 5², + 4², – 3²
5. 2, 14, 25, 82, 335, 1682, 10099
A) 14
B) 25
C) 82
D) 335
E) 1682
Option A
Pattern:
2 × 1 + 7 = 9
9 × 2 + 7 = 25
25 × 3 + 7 = 82
82 × 4 + 7 = 335
335 × 5 + 7 = 1682
1682 × 6+ 7 = 10099
6. 4, 12, 38, 76, 168, 356, 736
A) 12
B) 38
C) 76
D) 168
E) 356
Option B
Pattern:
×2 + 4, ×2 + 8, ×2 + 12, ×2 + 16, ×2 + 20, ×2 + 24
7. 13, 12, 26, 81, 320, 1605, 9624
A) 12
B) 26
C) 81
D) 320
E) 1605
Option A
Pattern:
× 1 + 1, × 2 – 2, × 3 + 3, × 4 – 4, × 5 + 5, × 6 – 6
8. 47, 53, 60, 71, 81, 127, 188
A) 53
B) 60
C) 71
D) 81
E) 127
Option D
Pattern:
……..+6……….+7………+11……..+20…………+36……………+61
……………..+1………+4………+9………+16……………+25
9. 13, 8, 11, 28, 129, 1016
A) 8
B) 11
C) 28

D) 129
E) 1016
Option D
Pattern:
13× 0.5 + 1.5 × 1 = 8
8 × 1 + 1.5 × 2 = 11
11 × 2 + 1.5 × 4 = 28
28 × 4 + 1.5 × 8 = 124
124 × 8 + 1.5 × 16 = 1016
10. 16, 39, 61, 81, 91, 105, 97
A) 39
B) 61
C) 81
D) 91
E) 105
Option D
Pattern:
……..+23………..+22……..+20………..+16……….+8……….-8
………………-1………….-2………..-4…………-8……………-16

## 6 Thoughts to “Quantitative Aptitude: Number Series Questions – Set 52 (Odd One Out)”

1. karthik

in 1st question that is 15 sir instead of 155… a small mistake..

2. reena sharma

Question 5 10092 is wrong

3. TR!D!P

in q.5 lst no should be 10099..

4. ★´¯`★ \$ţ¥ℓ๏жƶ şħùвħάм ★´¯`★

Plz provide daily number series odd out

5. jaga

thank u mam

6. Chotu D(mind) !! {NONSENSE}

done..