A woman lives in a Tall building thirty-six floors high and 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 solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

How can a man go eight days without sleep?

Can you move 2 matchsticks to form four equal sized squares.

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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