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?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Find the next number in the series.
1 10 24 43 67 ?

Can you guess the name of the month by looking the below rebus ?

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

What always comes into a house through the keyhole?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

If you say my name, I will no longer exist. What am I?

Count the number of squares in the picture below.

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?