If it took eight men ten hours to build a wall, how long would it take four men to build it?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

What is harder to catch the faster you run?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

Two Twins Jack and Jill were standing back to back and suddenly they started running in opposite direction for 4 kilometres and then turn to left and run for another 3 kilometres.

what is the distance between the Baggio twins when they stop ?

Why do Chinese men eat more rice than Japanese men do ?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?