What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Why is the longest human nose just 11 inches?

What does this mean?

CCCCCCC

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

What goes through cities and fields, but never moves?

What does does this rebus picture means ?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?