PREPARATORY QUESTIONS

WRONG NUMBER SERIES

PREPARATORY SET-21 (HARD)

Directions (Qs.1 to 5): In each of the following questions a number series is given. In each series only one number is wrong that does not follow the given pattern of the series. Find out that wrong number.

Question No : 1

512     517    527    542    570   607

(1) 517

(2) 527

(3) 542

(4) 607

(5) 570

Question No : 2

15   31   61   123   247   491            

(1) 31

(2) 61

(3) 123

(4) 247

(5) 491

Question No : 3

10   15   24   35   54   75   100

(1) 35

(2) 75

(3) 24

(4) 15

(5) 54

Question No : 4

539   566   597   636   691   780

(1) 691

(2) 780

(3) 566

(4) 539

(5) 636

Question No : 5

7   27   237   279   783   858

(1) 27

(2) 237

(3) 279

(4) 858

(5) 783