22. 512 = 16 ´ 32

    \ xy = 32

    512 = 2 ´ 2 ´ 2 ............ 9 times

            = (2 ´ 2 ´ 2)³

            = 83

    Ans : D

23. The y co-ordinate of point E represents the height of the parallelogram and the x co-ordinate represents its base.

    Area of a parallelogram= base ´ height = 12 ´ 3

     

= 36

 

(The given information Ð EFG = 30 is redundant.)

Ans : E

24.  1 ´ 3 = 3 3 ´ 5 = 15

1 ´ 5 = 5 3 ´ 7 = 21

1 ´ 7 = 7 7 ´ 5 = 35

0 ´ 1 = 0 ´ 3 = 0 ´ 5 = 0 ´ 7 = 0

Seven different values can be obtained as fh.

Ans : B

25.  Area yet to be surveyed = 12p - 6p

       = 6p

 

Square inches on map Actual Square (miles)

1 ´ 1                          30 ´ 30

6p                                 ?

=

= 5400 square miles

Ans : C

Index

Test 3

Test 4