What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

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?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

It is always ahead of me yet I can never see it. What is it?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. 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?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

Name a key which is hardest to turn.

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?