You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

There was a strange boy who was born before his father. How can this be possible?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

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?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

I have feet, but no legs. Which animal Am I?

What has many teeth, but cannot bite?