You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

People make me, save me, change me, raise me. What am I?

Imagine you are in a room with no windows or doors. How will you get out?

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

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Why Aeroplane windows are round?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?