Quantitative Aptitude: Number Series Set 124

Directions: The following series follow some pattern. Find the number in each series which does not follow that pattern and is unfit in the seies.

1. 96.., 46.., 72.., 180.., 630.., 2835

96
46
72
180
630
Option B
96 * 0.5 = 48 (not 46)

48 * 1.5 = 72

72 * 2.5 = 180

180 * 3.5 = 630

630 * 4.5 = 2835

2. 42…, 86…, 348…, 2094…, 16758

42
86
348
2094
16758
Option E
42 * 2 + 2 = 86

86 * 4 + 4 = 348

348 * 6 + 6 = 2094

2094 * 8 + 8 =16760 (16758)

3. 48…, 1764…, 1632.., 2622…, 2530

48
1764
1632
2622
2530
Option E
48 1764 1632 2622 2532
+12^3-12 -11^2-11 +10^3-10 -9^2-9

4. 1582…, 1602…, 1634…, 1690…, 1782…, 1920

1582
1602
1634
1690
1920
Option E
1582 1602 1634 1690 1782 1922

20 32 56 92 140

12 24 36 48

5. 124…, 63…64…, 130.., 524.., 4200.., 67214

63
64
130
524
67214
Option E
124 * 0.5 + 1 =63

63 * 1 + 1 = 64

64 * 2 + 2 = 130

130 * 4 + 4 = 524

524 * 8 + 8 = 4200

4200 * 16 + 16 = 67216 (not 67214)

6. Directions: The following series follow some pattern. Based on the same pattern find the number in place of (?) in each series.

7. 7512.., 3756…, 1252…, ?… , 62.6
231
313
455
320
334
Option B
The pattern is, Ã· 2, Ã· 3, Ã· 4, Ã· 5,â€¦.

8. 36…, 32…, 73…, 203…, 837…, ?..
3210
4149
4500
4677
4433
Option B
The pattern is, *1 â€“ 22, *2 + 32, *3 â€“ 42, *4 + 52, *5 â€“ 62,â€¦.

9. 3278…, 5384…, 6086…, 6320…, ?… , 6424
5678
6740
6398
5566
6889
Option C
3278 5384 6086 6320 6398 6424
2106 702 234 78 26
The difference is, Ã· 3

10. 819…, 818…, 408…, 135…, ?..
31
31.5
32
32.75
33
Option D
The pattern is,
(819 â€“ 1)/1 = 818
(818 â€“ 2)/2 = 408
(408 â€“ 3)/3 = 135
(135 â€“ 4)/4 = 32.75

11. 1276…, 1280…, 1296…, 1360…, ?… , 2640
1212
1313
1414
1515
1616
Option E
The pattern is, +4^1, +4^2, +4^3, +4^4,â€¦.