4.

Answer

3.

Answer

   
 So the required respective ratio is = (y-z)/(z-x)

2.

Answer

(D) Some of the positions of first three letters is equal to the position of fourth letter :

(A).  DEGP  = 4+5+7 =16                      [16 represents P]
(B).  HADM = 8+1+4 =13                      [13 represents M]
(C).  SBKF  =  19+2+11 =32                  [26+6 represents F]
(D).  TFKL = 20+6+11+12 =49               [26+23 represents W]

1.

Answer 

The sum of all numbers in each column is 200

.'. Missing number is =200- (87+56+50) = 7