Good Riddles

 
Riddle #153 (medium)

Question: 2 men catch 2 fish in 2 minutes. At this rate, how many men could catch 500 fish in 500 minutes?

Riddle #154 (medium)

Question: A man built his house above a river between two trees. He attaches his house to the middle of the two tree's trunks. He does this because the river rises by 2 inches each years, but the trees grow 1 inch each year. If his house is 4 inches above the river how long will it take for water to hit his house?

Riddle #155 (medium)

Question: A computer walks up to two stores, one called '1', and one called '0'. Which does it choose?

Riddle #156 (medium)

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

What is it?

Riddle #159 (medium)

Question: Everyday I stalk you all day long,
With every move you make, I never make one wrong.
I vanish twice a day with the sun's height and fall,
I will follow you anywhere,
even the bathroom stall.

What am I?