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

How many triangles are there in the given figure ?

? : 63 : : 08 : 25