What does the below rebus riddle means?

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

If eleven plus two equals one, what does nine plus five equal?

You can see three almost identical images below. Can you spot the odd one out from them?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

What does below chemistry rebus means?

My location can be determined by the below rebus.
So where am i ?

Find the next number in the series below.

6 18 270 72090 ?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?