# Quantitative Aptitude: Number Series Set 109

Directions(1-10): Find the missing term ‘?’ of the following number series.

1. 104, 109, 99, 114, 94, ?
125
111
109
128
119
Option E
+5,-10,+15,-20,+25
? = 119

2. 980, 392, 156.8, ?, 25.088, 10.0352
62.72
50.17
55.55
50.10
60.16
Option A
/2.5 with each numbers
? = 62.72

3. 14, 16, 35, 109, 441, ?
2501
2335
2211
2020
2112
Option C
*1+2
*1+3
*1+4
*1+5
*1+6
? = 2211

4. 1331, 2197, 4913, 6859, ?, 24389
13829
12167
10382
11737
12256
Option B
11^3 = 1331
13^3 = 2197
17^3 = 4913
19^3 = 6859
23^3 = 12167
29^3 = 24389

5. 3600, 725, 150, 35, 12, ?
5.5
8.1
6.3
7.4
7.9
Option D
/5+5
/5+5
/5+5
/5+5
/5+5
/5+5
? = 7.4

6. 13, 14, 30, 93, 376, 1885, ?
15637
12739
10383
11316
13527
Option D
13 Ã— 1 + 1 = 14
14 Ã— 2 + 2 = 30
30 Ã— 3 + 3 = 93
93 Ã— 4 + 4 = 376
376 Ã— 5 + 5 = 1885
? = 1885 Ã— 6 + 6 = 11316

7. 4, 6, 9, 13.5, 20.25, 30.375, ?
32.1437
45.5625
47.1439
30.1536
37.1437
Option B
*1.5
*1.5
*1.5
*1.5
*1.5
*1.5
? = 45.5625

8. 400, 240, 144, 86.4, 51.84, 31.104, ?
15.4549
14.1466
13.9746
18.6624
19.1437
Option D
*0.6
*0.6
*0.6
*0.6
*0.6
? = 18.6624

9. 9, 4.5, 4.5, 6.75, 13.5, 33.75, ?
108.12
112.71
105.15
103.17
101.25
Option E
*0.5
*1
*1.5
*2
*2.5
*3
? = 101.25

10. 705, 728, 774, 843, 935, 1050, ?
1372
1426
1527
1145
1188
Option E
705 + 1 Ã— 23 = 728
728 + 2 Ã— 23 = 774
774 + 3 Ã— 23 = 843
843 + 4 Ã— 23 = 935
935 + 5 Ã— 23 = 1050
? = 1050 + 6 Ã— 23 = 1050 + 138 = 1188