First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

What has 88 keys?

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

What building has the most stories?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?