# Quantitative Aptitude: Number Series Set 131

Directions: The following number series are based on a certain pattern. One number out of all is incorrect and does not follow the pattern. Find that odd one out.

1. 33 …..44….88…121…379….594
33
44
88
121
379
Option E
379 is not a multiple of 11.

2. 12…36…54…18…27….10…
12
36
54
10
27
Option D
The terms are alternatively multiplied by 1.5 and divided by 3. So

3. 588….565…582…605….588….611…634
565
605
611
634
582
Option D
Alternatively 23 is added and 17 is subtracted

4. 3840 384 48 24 2 1
3840
384
48
24
2
Option D
Terms are successively divided by 10, 8, 6â€¦

5. 1…7…37….167…937..
1
7
37
167
937
Option D
Series is: * 5 + 2

6. 3….10….9…42….148
3
10
9
42
148
Option E
The series is Ã— 1 + 7; Ã— 2 â€“ 11; Ã—3 + 15 ; Ã—4 â€“ 19 and so on.

7. 145…258…381…514…658
145
258
381
514
658
Option E
The series is 112 + 1; 122+ 1; 132 + 1; 142 + 1 â€¦ and so on.

8. 62 …124….246…496…992
62
124
246
496
992
Option C
Add the sum of digits of the number to the number itself for obtaining the next new number.

9. -10 … 3… 29…121… 524
-10
3
29
121
524
Option D
The Series is Ã—1+13; Ã—2+23; Ã—3+33; .. and so on. Here 2536 should be replaced by 2526.

10. 272… 130…60…26…12
272
130
60
26
12
Option E
The series is Ã·2 â€“ 6; Ã·2 â€“ 5; Ã·2 â€“ 4 .. and so on.