I can write cow in 13 letters.

Can You?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

You can hear me, but you can't touch or see me.

What am I?

You can see three almost identical images below. Can you spot the odd one out from them?

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?

Which English verb becomes past tense just by rearranging the letters?

In which direction should the missing arrow point?

What is the largest number you can write with just 3 digits?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

What question can you never answer yes to?