Probability of drawing a specific card from a deck

FratBro23
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Question description

The probability of drawing a club from a deck of cards is 1/4 (FRACTION); what are the odds in favor of drawing a club from an ordinary deck of cards? 



A single card is drawn from a standard deck of cards. Find the probability if the given information is known about the chosen card. A face card is a jack, queen, or king.  P(face card|king)

 

An oil-drilling company knows that it costs $25,000 to sink a test well. If oil is hit, the income for the drilling company will be $395,000. If only natural gas is hit, the income will be $160,000. If nothing is hit, there will be no income. If the probability of hitting oil is 1/40 and if the probability of hitting gas is 1/20, what is the expectation for the drilling company?
$    

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(Top Tutor) Daniel C.
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