If eleven plus two equals one, what does nine plus five equal?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

What two things can you never eat for breakfast?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

I am an odd number. Take away a letter and I become even. What number am I?

In the four images below, can you find the odd one out?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?