I look at you, you look at me, I raise my right, you raise your left. What am I?

What word is represented by this rebus?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Can you write down eight eights so that they add up to one thousand?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?