Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

I look at you, you look at me I raise my right, you raise your left. What am I?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

How many words can a pen with half refill write?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

What begins with T, ends with T, and has T in it?