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: We are just like people. We grow, we get old, we die off. We come in many different colors. Black, white, brown. We come in a army, there are thousands of us, yet we have no war. But we will still die off over the years. What am I?

Question: I am the beginning of sorrow, and the end of sickness. You can't express happiness without me, yet I'm in the midst of crosses. You may find me in the sun, but never in the evening. What am I?

Question: You are trapped in a haunted house with no electricity. There are four doors to get out of the house only one is safe. In one door a man will stab you, in another you will get electrocuted, in another one you will get shot at, in the final one it is filled with vicious dogs. Which door is safe?

Question: Men are just as small as stars to me but men can see me while the stars cannot. I am a reflection of the ocean and fire but never earth though without an earth you cannot have me.