Using eight eights and addition only, can you make 1000?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

What is full of holes but still holds water?

What is the coolest letter in the alphabet?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What two things can you never eat for breakfast?

Can you move 2 matchsticks to form four equal sized squares.

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?