A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

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

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

Can you place three balls such that the equation shown in the picture holds true?

Consider this about a word: 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?

A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.