If you say my name, I will no longer exist. What am I?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

What type of tree can I carry in my hand?

There is something which is always coming but never arrives?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

81 x 9 = 801. What must you do to make the this equation true?

I am an odd number. Take away a letter and I become even. What number am I?

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?

There is a place where if I stand up straight, I will still be considered sideways.