At a store, customers are randomly selected to participate in a survey. on friday there were 500 customers at the store. of those, 90 were selected to participate in the survey. on saturday, the store manager expects 700 customers in the store. if the probability of being selected to participate in the survey on saturday is the same as it was on friday, how many customers will be selected to participate in the survey on saturday?

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

Three people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting. drag each exchange to the category that shows the ratio of currencies in that exchange.

Find the interior angle of a regular polygon which has 6 sides