You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

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?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Out of four images which one is the odd one out?

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

I have branches, but no fruit, trunk or leaves. What am I?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What has to be broken before you can use it?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?