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?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Find the hidden panda in the image below.

Why are all black people so quick ?

Solve the equation in the image by looking at the pattern closely.

Next Number in the Series,

5, 16, 49, 104, ?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

When can we add 2 to 11 and get 1 as the correct answer?