You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

What occurs twice in a week, once in a year but never in a day?

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 you see in the middle of March and April that you can never see in any other month?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?

Can you count the number of triangles in the given picture?

Identify the hidden meaning behind this picture?

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?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?