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

Which flower has two lips?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what 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?

Which point will the car reach to go out?

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

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.

How many times can you subtract the number two from the number fifty?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain