9. The data is insufficient, as the total number of caps is not given.

Ans : D

10.     2184    =   12 ´ 13 ´ 14

                = ( n - 1 ) (n) (n + 1)


(n - 1)      =   12   =   least number


       14    >   12


Ans : A

11. Radius of circle    =   OH  +  HK

                            =   4 + 6


                            = 10


Using Pythagoras for DMHC


         MK²    =    MH²   +    HK²
                     =    6²    +    6²
                     =    72
           MK    =    8.49


            MK    <    ON

Ans : B

12. C    =   2p   r   where x   =   side of square
                                          r = Circumference of circle
    P            =   4x
    2 p r      =   4x
           r      =   x
    
           r       =    x
           r       =   2/3 x
           3r     =   2x
           2x    >   3r

    Ans : B

13. a D b     =    b² - 2a


-1 D 1    =   (+1)² - 2 (-1)
              = 1 + 2
              = + 3


1 D -1    =   (-1)² - 2(1)
              = 1 - 2
              = -1


          3  >  -1


Ans : A

14. (a - 3)       (a + 7)      =      a² - 3a + 7a - 21
    

                                      =    a² + 4a - 21

                                      =    a² + kx - 21

                                 k   =   4

                                k    >   - 4

    Ans : A

15. Let H, P, O & C be the amounts that Harold, Philip,


Owen and Clint have respectively.
H > P
C > O > P
The relationship between H and C or H and O must be given.

Ans : D

[next page]

Index