Hard Riddles and Answers

Question: There are two boys at an international math contest in December 2013; one is British and one is American. They both write their names, the date, and their answers on the paper. The only problem is that they both have the same name and the papers cannot be told apart.

What is the date?

Question: My eye is dark,
and my mane is yellow.
You man see me at the mart,
and I'm probably taller than you fellow.

What am I?

Question: My shallow hills are the faces of kings.
My horizon is always near.
My music sends men to the grave.
My absence sends men to work.

What am I?

Question: What is the easiest way to poke a balloon without popping it?

Question: There are 100 passengers boarding a 100 passenger airplane. When passenger 1 gets onto the plane, he is dissoriented, so he randomly picks a seat. Each of the remaining passengers (2, 3, 4, etc.) get onto the plane and take their seat if it is available or picks one of the remaining seats at random if it is not.

What is the chance that the last passenger (passenger 100) will get his seat?

Question: I am a nice word composed of five letters, but the Romans would call me a numbers.

What am I?

Question: It takes one word to separate them; otherwise they are inseparable.

What are they?

Question: Whoever makes me can hear me, but nobody else can.

What am I?

Question: A poor woman takes an expensive piece of jewelry, when she is caught the owner of the jewelry tells her "You can have this for seven figures or you will go to jail." The woman soon leaves with the jewelry.

How did she do this?

Question: I am shorter when I stand and taller when I sit.
Sometimes I'm even called a pit.

What am I?