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12-07-2018
Mathematics

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There are seven nickels and four dimes in your pocket. You randomly pick a coin out of your pocket an dplace it on a counter. Then you randomly pick another coin. Find the probability that both coins are nickels.

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konrad509 konrad509

12-07-2018

[tex] |\Omega|=11\cdot10=110\\
|A|=7\cdot6=42\\\\
P(A)=\dfrac{42}{110}=\dfrac{21}{55} [/tex]

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