A tree is seventh in a row of trees from either end of the row. How many trees are there in the row?

In a family A is the brother of B , C is the father of A, D is the brother of E and E is a daughter of B then the uncle of D is ? 

6 : 17 :: 9 : ?

Arnav's birthday is on Tuesday 14^th March. On what day of the week will be Pranay's Birthday in the same year if Pranay was born 13th September? 

Complete the following alphabet series.
ZA : YB :: YC :?

Khanak travels 8 km from East to West and turns right to travel 2 km. Now he turns right and travels 5 km. In which direction is he now positioned with reference to the starting point? 

In the given figure, how, how many keys are duplication but not steel?

Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of ::?
 # : DKR :: PCL: %