Six friends are sitting a circle and are facing the centre of the circle. Deepa is between Prakash and Pankaj. Priti is between Mukesh and Lalit. Prakash and Mukesh are opposite to each other.

Who is sitting right to Prakash?

123 : 4 :: 726 : ?

6 : 64 : : 11 : ?

Some boys are sitting in a row. P is sitting fourteenth from the left and Q is seventh from the right. If there are four boys between P and Q, how many boys are there in the row?

17 : 60 : : 20 : ?

If + means - , - means ×, × means ÷, and ÷ means +, then what will be the value of following expression?
15 – 2 ÷ 90 × 9 + 10

64 : ? :: 72 : 53

? : 63 : : 08 : 25