What is the coolest letter in the alphabet?

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?

How can you make number one disappear by adding something to it?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

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

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

What Does this text mean:

important=important

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?