I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

How many triangles are there on the puzzle below?

I have feet, but no legs. Which animal Am I?

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?

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.

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

What does the below rebus riddle means?

What Adam and Eve do not have but the rest of the people have?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?