Fun Riddles

Question: When is... 5>0, 0>2 and 2>5? Hint: Hands

Question: Surrounded by green, surrounding white.
Inside is red, holding many black babies.

What is it?

Question: How can six become sticks?

Question: Two men play five sets of tennis together and each win three sets.

How is this possible?

Question: To be here is to be close to those dear,
I see no light but feel warmth from within,
it's lonely here but soon I'll be free.

What am I?