A truck is crossing a bridge 2 mile long. The bridge can only hold 10000 lbs, which is the exact weight of the truck. The truck makes it half way across the bridge and stops. A bird lands on the truck. Does the bridge collapse? Explain.

How can you hold a piece of string, one end in each hand and tie a knot in the string without letting go of either end ?

Find four numbers, the sum of which is 45, so that if 2 is added to the first number, 2 is subtracted from the second number, the third number is multiplied by 2 and the fourth number is divided by 2, then the four numbers so produced are all the same. What are the four numbers?

An old fashioned bicycle wheel has 21 spokes. How many spaces are between the spokes – 20, 21 or 22?

Christina is outside a shop. She cant read the signs but she knows she needs to go in to make a purchase. What store is she at?

Marlin was making apricot jam. She put all the apricots in the pot and stirred them up. Then she remembered she had to add 1 ounce of lemon juice for every two apricots! How did she figure out how much lemon juice to put?

A group of soldiers were standing in the blistering sun facing west. Their commander shouted at them: Right turn! About turn! Left turn! In which direction are they now facing?

One day, a twenty story building was on fire. A man jumped out a window and nothing happened to him. Nothing was under him. How is this possible?