SOLUTION: In your history class,you are studying exploration to the New World. Your teacher has planned to celebrate Columbus Day by awarding a pizza lunch for two of the best essay writer o
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Question 975598: In your history class,you are studying exploration to the New World. Your teacher has planned to celebrate Columbus Day by awarding a pizza lunch for two of the best essay writer on the life and the voyages of the explorer. You and your best friend are in the same class and have agreed to share lunch with each other if either essay is selected. Suppose all of the 28 students have an equal chance of having their essay selected, what are your chances of having a free pizza lunch during the month of October? Explain your method. Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! There are 28 students, two will be chosen.
That makes for C(28,2) combinations or 378.
You win for 27 of those combinations.
Your friend wins for 27 of those combinations.
You both win on one of those combinations so subtract one out so you don't double count.
So you win on 27+27-1=53 of those outcomes.
