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, 6…
   

    

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 × 1 + 7; × 2 – 11; ×3 + 15 ; ×4 – 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 … 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 ×1+13; ×2+23; ×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 ÷2 – 6; ÷2 – 5; ÷2 – 4 .. and so on.