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?

What Time Should the last watch show in the below figure?

What can go through glass without breaking it?

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

You are given 16 witch hats. The hats are divided in four different colours – red, blue, green and yellow. Every colour has been assigned to four hats. Now each of the hat will be glued with a label of an arithmetic sign – ‘+’, ‘-‘, ‘x’ or ‘/’. But you can label one sign only once on one colour. In such an arrangement, the hats can be uniquely defined by its colour and symbol.

Can you arrange all the 16 hats in a 4x4 grid in a fashion that no two rows and columns have a repetition of colour or sign?
We have arranged four hats in the below picture to assist you.

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

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

What makes this number unique: 8,549,176,320?

Can you name some countries which do not have the alphabet 'A' in them?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.