A and B are brothers. C and D are sisters. A’s son is D’s brother. How is B related to C ?

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

Starting from house Abhijit walked 30 meters in North west direction. Then he walked 30 m. in south - west direction. Then he walked 30 m. in north - east direction. Now he is how much distance away from his house. 

If in a certain code language “ DELHI” is coded as "CCIDD", "SIGHT" is coded as "RGDDO", then in the same code language "BOMBAY" will be coded as-

Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
 19 : 324 :: 25 : 576 :: 9 : ?

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

23                32          16

3                 4              5

72              132         ?

A is B’s brother, C is A’s mother, D is C’s father, E is B’s son. How is D related to A ?