Logic riddles

A hundred feet in the air, but it's back is on the ground. What is it?

What has a tongue, cannot walk, but gets around a lot?

What goes up and down the stairs without moving?

If there're 3 apples and you take away 2, how many do you have?

What has many keys but can't open any doors?

Five add six is eleven, but six add seven is one. How is that possible?

This old one runs forever, but never moves at all. He has not lungs nor throat, but still a mighty roaring call. What is it?

In the final stretch of a road race, you pass the 2nd-place runner right before crossing the finish line. What place do you finish in?

The Pope, Beyonce, POTUS, and Bill Gates are on the same plane. There are only 3 parachutes left for the 4 of them. POTUS says: "As the President, I think I should have the right to have a parachute, because I rule millions of people in the greatest nation of all." Beyonce says: "As one of the greatest singers of all-time, I think I should deserve to be safe. I bring tears and laughter to millions of people, and I'm an important contributor to pop music." Bill Gates says: "As one of the richest successful company owners, I think I should live because I'm on top of the economics cycle, creating jobs and incomes for millions of people. I am a wealthy and intelligent man." Finally, the Pope says: "I'm an old, religious man. I lived a life that's full, I helped millions of people find their way through God, I'm ready to let go of a parachute and to face my fate." Which one of them will abandon the parachute and die?

What word becomes shorter when you add two letters to it?