54 percent of the customers of a fast food chain order the Whopper, French fries and a drink. A random sample of 18 cash register receipts is selected. What is the probability that eight receipts will show that the above three food items were ordered? (Round the result to five decimal places if needed.) Four scholarships of $5000, $4000, $3000 and $2000 are available for needy students. 12 students have applied and no student may receive more than one scholarship. Assuming all 12 students are in need of funds, how many different ways could the scholarships be awarded? According to a recent survey, 61% of all families in Canada participated in a Halloween party. 9 families are selected at random. What is the probability that at least two families participated in a Halloween party? (Round the result to five decimal places )