Why is the longest human nose just 11 inches?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

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

Solve the counting riddle by identifying the number of triangles in the given picture.

I don't get anymore wetter, no matter how much rain falls on me.

What is the riddle which can be asked all day with a different correct answer each time.

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?