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In “The Second Dervish’s Tale,” how does demon discover it was the dervish who slept with his wife in the underground palace?

Find the expected value.In a large casino, the house wins on one of its games with a probability of 50.5%. All bets in the game are  1:1 . If you win, you gain the amount you bet; if you lose, you lose the amount you bet. What is the expected value to the player of a single game?

Solve the problem.Suppose a charitable organization decides to raise money by raffling a trip worth $500. If 3,000 tickets are sold at $1.00 each, find the expected net winnings for a person who buys 1 ticket.

Choose the appropriate answer:

Provide an appropriate response.The permutation formula can be used to determine which of the following?A: The number of ways of completing a test consisting of 10 true/false questionsB: The number of ways of arranging 8 people in a lineC: The number of ways a panel of people could vote if each person votes yes or no

Solve the problem.How many ways can an IRS auditor select 3 of 11 tax returns for an audit?

Find the expected value.Suppose you pay $3.00 to roll a fair (6-sided) die with the understanding that you will get back $5.00 for rolling a 1 or a 5, nothing otherwise. What is your expected net winnings?

Solve the problem.How many different 6-letter sequences can be made using the first 11 letters of the alphabet? Assume that repetition of letters is allowed.

Solve the problem.A pizza restaurant advertises 120 different 3-topping pizzas. How many individual toppings does the restaurant use? Assume that no topping is used more than once on a pizza and that the order of the toppings on the pizza is unimportant.

Solve the problem.There are 6 women running in a race. How many different ways could first, second, and third place finishers occur?