John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

What word begins and ends with an E, but has only one letter?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

What can you see in the middle of March and April that you can never see in any other month?

Can you write down eight eights so that they add up to one thousand?

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

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?