What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

What kind of band never plays music?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

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?