# Quants Questions : Number Series Set 5

Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

1. 105 , 185 , 247 , 293 , ?
A)338
B)315
C)325
D)225
Explanation :
9^2 – 1 = 80=>80 + 105 = 185
8^2 – 2 = 62=> 185+62 = 247
………………………………………
6^2 – 4 = 32 => 293+32  = 325

2. 5, 10,  30, 105 ?
A)220
B)440
C)230
D)240
Explanation :
5×1 = 5+5 = 10
10×2 = 20+10 = 30
………..
105×4 = 420+20 = 440

3. 4 , 2, 2, 3, 6, ?
A)15
B)12
C)11
D)14
Explanation :
4×0.5 = 2
2×1 = 2
2×1.5 = 3
…….
6×2.5 = 15

4. 5, 14 , 40 , 117 , ?
A)317
B)327
C)337
D)347
Explanation :
5×3 – 1 = 14
14×3 – 2 = 40
……….
117×3 – 4 = 347

5. 15 , 22, 72, 552 , ?
A)4500
B)4592
C)8800
D)4763
Explanation :
15×2 – 8 = 22
22×4 – 16 = 72
72×8 – 24 = 552
552×16 – 32 = 8800

6. 12 , 20 ,34, 57,  ?
A)93.5
B)93
C)93.2
D)93.25
Explanation :
12×1.5+2 =  20
20×1.5+4 = 34
34 × 1.5 + 6 = 57
57× 1.5 + 8 = 93.5

7. 20 , 8 , 6 , 1 , ?
A)1.5
B)1
C)2
D)2.5
Explanation :
20-4÷2 = 8
8+4÷2 = 6
6-4÷2 =1
1+4÷2 =2.5

8. 1200, 1119 , 1055 , 1006, ?
A)960
B)970
C)910
D)900
Explanation :
1200 – 81 = 1119
1119 – 64 = 1055
1055 – 49 = 1006
1006 – 36 = 970

9. 2561 , 2440 ,2359 , 2310 , 2285, ?
A)2233
B)2224
C)2269
D)2276
Explanation :
2561- 121 =  2440
2440 – 81 = 2359
2359 – 49 =2310
2310 – 25 = 2285
2285 – 9 = 2276

10. 1,14 ,78 , 395 , ?
A)1526
B)1625
C)1576
D)1565