There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Find the missing number in the sequence below:

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Move three sticks of the spiral below to form a square.

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
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GAMES
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