Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

You were playing ping pong with your friend. Suddenly the ball fell into a narrow metal pipe that was imbedded in the concrete surface of the floor one foot deep. Now you don't have any other ball and you desperately want to take it out and play. You and your friend have your shoelaces, your tennis paddle and a plastic water bottle. However, the bottle cannot fit into the pipe.

How will you take the ball out?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

The dirtier I get, the whiter I look. Who am I?

Can you count the number of squares in the given picture?

what one word does the below rebus identifies?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

Can you solve the maths in the below-given picture equation?

What is common among 11, 69, and 88?