How smart are you?

This is an I.Q. Test to see if you are a genius or you are just taking up space on earth.

1 A pound of nails is heavier than a pound of feathers.
2 Some months have 31 days; how many have 28?
3 A plane is flying from America to England to Australia. On its way from England to Australia it crashes. Where will they bury the survivors?
4 Is there a fourth of July in your country?
5 Is it legal for a man in your country to marry his widow's sister?
6 There is a peanut tree between two houses. The bigger limb leans over to the leftside of the fence. When it bears who own the peanuts?
7 Divide 30 by 1/2 and add 10. What is the answer?
8 A doctor gives you three pills telling you to take one every half hour. How many minutes would the pills last??
9 A farmer has 17 sheep, and all but 9 die. How many are left?
10 You are participating in a race. You overtake the second person. What position are you in?