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?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Take away the whole and some still remain. What is it?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

Which flower has two lips?

How can you leave a room with two legs and return with six legs?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

In the image given, you can find several triangles. Can you count them all?

If eleven plus two equals one, what does nine plus five equal?