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One card is selected from a deck of playing cards. What is the probability that the card selected is either a club or a face card?

User Sid Zhang
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1 Answer

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Solution

For this case we can define the following events:

C= the card selected is a club

F= the card selected is a face card

We want to find this probability:


P(\text{CUF)}

We can use the total rule of probability and we have:


P(\text{CUF)}=P8C)+P(F)-P(C\cap F)

And we can find the individual probabilities like this:


P(C)=(13)/(52)
P(F)=(12)/(52)

And the intersection is given by:


P(C\cap F)=(3)/(52)

Replacing we have:


P(\text{CUF)}=(13)/(52)+(12)/(52)-(3)/(52)=(22)/(52)=(11)/(26)

Then the answer is:

11/26

User PankajSharma
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