How smart are you?

If you get all of this right then you are amazing!

1 First of all, which one of these would you consider yourself to be?
2 Sarah is sixteen and four times her brother's age. How old will sarah be when she is twice her brother's age?
3 A woman is sitting in a pitch black room with no light at all, how is she reading her book?
4 A man rides into a town on Friday and stays three days, he then leaves on Friday, how does he do it?
5 A man is driving his car and sitting next to him is his son, then a deer jumps onto the road and the man and his son have a crash. The man dies and his son is taken to hospital for his injuries. When in theatre, the surgeon says "Thats my son!". How is the boy the surgeon son?
6 If you had 10 tons of feathers and 10 tons of lead and you dropped them both at the same time, which would land first?
7 What comes next in the sequence... 2, 5, 11, 23, 47, ...
8 A bungalow has a red door, a red floor, a red roof and everything else is red, what colour is the stairs?
9 Bella's mother has three children, Nicola, Kate and ? <------ Guess the name of the third child.
10 A dice is thrown 80 times. it lands on a six 12 times. What is the probability of throwing a six?