We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

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?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Can you count the number of lines in the below picture?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

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