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?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

People make me, save me, change me, raise me. What am I?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

Trying to tease Birbal, Akbar gave him one gold coin and ask him to buy
* something for him to eat
* something for him to drink.
* something to feed the cows
* something to plant in the garden
and most important you need to buy only one thing.

What must Birbal buy to silence Akbar?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?