SOLUTION: Tamika has $2.50 in quarters in her pocket,including four stgate quarters. She reaches into her pocket and takes out two quarters, one at a time. What is the probablility that th

Algebra ->  Probability-and-statistics -> SOLUTION: Tamika has $2.50 in quarters in her pocket,including four stgate quarters. She reaches into her pocket and takes out two quarters, one at a time. What is the probablility that th      Log On


   

Question 566307: Tamika has $2.50 in quarters in her pocket,including four stgate quarters. She reaches into her pocket and takes out two quarters, one at a time. What is the probablility that they are both state quarters?
Answer by stanbon(75887) About Me  (Show Source):
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Tamika has $2.50 in quarters in her pocket,including four state quarters. She reaches into her pocket and takes out two quarters, one at a time. What is the probablility that they are both state quarters?
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She has 10 quarters; 4 of them are state quarters.
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# of ways to pick 2 state quarters: 4C2 = 6
# of ways to pick 2 quarters randomly: 10C2 = 45
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P(2state quarters) = 6/45 = 2/15
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Cheers,
Stan H.
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