You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

who is silent in the parliament?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

The more it dries, the wetter it becomes. Can you tell what it is?

Find out the number of circles in the given picture having Illusion

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

What number divided by 4 is the same as that number minus 4?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.