on a television game show, 8 memebrs of the studio audience are randomly...

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東 瓜

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...slelected to be elgible contestants.? a: Five of the 8 eligible contestants are randomly chosen to play a game on stage. How many combinations of 5 players from the group of eligible contestants are possible? is it 56?
B: You and your friend are part of the group of 8 eligible contestants. What is the probability that both of you are chosen to play the game on stage? i got 1/64 ? or is it 1/56?
can you explain please?
 
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