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?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

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

What am I?

Count the number of balls in picture below:

Move three sticks of the spiral below to form a square.

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?