Can you identify if it's a murder or a suicide ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

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

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

What is 3/7 chicken, 2/3 cat and 2/4 goat?