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?

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

John is the son of Jacob.
So,
Jacob is the_____of John's father?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Guess the hidden movie name?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

I can be cracked, made, told, and played. What am I?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

A man dies of old age on his 25 birthday. How is this possible?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?