Algebra
You want to throw a patry for 10 men and 10 women but your backyard can only hold 10 people. So you decide to throw a series of parties so that every man and woman will have the opportunity to meet at one of your parties. Unfortunately you have limited funds so you want to make sure that you hold the minimum nomber of parties for everyone to meet. You talk to your neighbour about the parties and she says you should not need any more than four parties. Show that she is correct.
You want to throw a patry for 10 men and 10 women but your backyard can only hold 10 people. So you decide to throw a series of parties so that every man and woman will have the opportunity to meet at one of your parties. Unfortunately you have limited funds so you want to make sure that you hold the minimum nomber of parties for everyone to meet. You talk to your neighbour about the parties and she says you should not need any more than four parties. Show that she is correct.
