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Concept explainers
Exercises 7–12 deal with the poker hands described in Table 12.3. We assume that we are drawing five cards from a standard 52-card deck.
Playing poker. To construct a straight, we must choose five cards in sequence (not all of the same suit).
a. In how many ways can we choose a sequence of five cards?
b. For each sequence in part (a) we must select a suit for the first card, a suit for the second card, and so on. In how many ways can we do this? (Hint: Draw a slot diagram for the five cards.)
c. Multiply the results from parts (a) and (b).
d. Subtract the number of royal flushes and straight flushes that are not royal, found in Exercises 7 and 8.
7. Playing poker. In how many ways can we obtain a royal flush
8. Playing poker. In constructing a straight flush, we first choose a suit and then choose a sequence of five cards within the suit.
a. In how many ways can we choose the suit?
b. In how many ways can we choose the sequence of five cards within the suit?
c. In how many ways can we construct a straight flush?
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Chapter 12 Solutions
Mathematics All Around (6th Edition)
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- 2. Find the equation of the tangent line to the graph of the given function at the given point. f(x)=(x+3)(2x²-6) at (1,-16)arrow_forward6. Researchers who have been studying the alarming rate at which the level of the Dead Sea has been dropping have shown that the density d (x) (in g per cm³) of the Dead Sea brine during evaporation can be estimated by the function d(x)=1.66 0.90x+0.47x², where x is the fraction of the remaining brine, 0≤x≤1. a) Estimate the density of the brine when 60% of the brine remains. b) Find and interpret the instantaneous rate of change of the density when 60% of the brine remains.arrow_forward5. If g'(5) 10 and h'(5)=-4, find f'(5) for f(x)=4g(x)-2h(x)+3.arrow_forward
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