Good Riddles

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?

Question: Why would a hair stylist rather cut the hair of two brunettes than one red head?

Question: I can go up a chimney down but not down a chimney up?

What am I?

Question: A mother is 21 years older than her child. In 6 years the mother will be 5 times older than her baby.

Where is the father?

Question: You are a surgeon who has to perform 3 operations today, but you only have 2 pairs of gloves (a and b) to perform the operations. Each of the people you are performing surgery on are infectious so you cannot touch any of them or their bodily fluids and they can't touch each other's bodily fluids. How do you perform all 3 operations with only 2 pairs of gloves?