You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Different lights make me strange by changing me into different sizes. What am I?

Give it food and it will live; give it water and it will die.

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

What breaks yet never falls, and what falls yet never breaks?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

Why is it very easy to weigh a fish?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?