Good Riddles

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: On a clock, how many times a day do the minute and hour hand overlap?

Question: which dress you can not wear?

Question: I brighten your day but live in the shade.

What am I?

Question:

Sad, sick, or sloppy I'll help you out,
Use me right and I'll cover your snout.

What am I?