2, 3, 5, 9, 17, _ What is the next number in the sequence?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What begins with T, ends with T, and has T in it?

What is harder to catch the faster you run?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

Different lights make me strange by changing me into different sizes. What am I?