A very special island is inhabited only by knights and knaves. Knights always tell the truth, and knaves always lie. You meet four inhabitants: Dave, Rex, Bart and Zoey. Dave tells you that Bart could say that Rex is a knave. Rex claims, “I would tell you that Bart is a knave.” Bart claims, “Only a knave would say that Zoey is a knave.” Zoey claims, “I and Dave are different.” Can you determine who is a knight and who is a knave?

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount