SOLUTION: Suppose you have 11 black socks and 11 green socks in the dryer. 4. Without looking, how many socks would you need to pull out of the dryer to be sure you get a black pair?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Suppose you have 11 black socks and 11 green socks in the dryer. 4. Without looking, how many socks would you need to pull out of the dryer to be sure you get a black pair?       Log On


   

Question 939773: Suppose you have 11 black socks and 11 green socks in the dryer.
4. Without looking, how many socks would you need to pull out of the dryer to be sure you get a black pair?
5. Without looking, how many socks would you need to pull out of the dryer to be sure you get a matching pair (of any color)?

Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose you have 11 black socks and 11 green socks in the dryer.
4. Without looking, how many socks would you need to pull out of the dryer to be sure you get a black pair? 
Answer: 13.  Why? because of the extremely unlikely case that the first 11 you
        pull out would all be green, then in that case your 12th and 13th socks
        would have to be black because there would be no more green ones left to
        pull out, but very likely you wouldn't need to pull out nearly that
        many.

5. Without looking, how many socks would you need to pull out of the dryer to be sure you get a matching pair (of any color)? 
Answer: 3.  Why? Because there are only two colors and three socks can't all be
        different colors.

Edwin