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

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

How many times can you subtract the number two from the number fifty?

How many letters are in the alphabet?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Count the number of triangles in the given picture.

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Why is the Hole below a Lock?