How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Can you find the mistake in the below statement?

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

You need to arrange three 7 and mathematical symbols to form number 1?

John was piloting a plane behind a car but was never able to overtake it. Why?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

What does Alexander the Great and Winnie the Pooh have in common?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?