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OpenStudy (anonymous):
You have 7 friends who want to go to a concert with you, but you only have 2 extra tickets. How many possible ways are there to choose 2 of your 7 friends? A)49 B)21 C)14 D)42
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OpenStudy (anonymous):
im not sure but i think its 49..right?
OpenStudy (savvy):
7C2 = 21
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