Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

What is the word or phrase?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

I know a nine-letter word having only one vowel.
Do you ?

Find the number of squares in the below-given picture.

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Where do fish keep their money?