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**chickeneaterguy** Suppose that Jennifer is in a final round of interviews for various jobs with four different employers, after which each employer will send out one job offer to one candidate. Suppose that two other candidates are competing with her for each of the jobs, and that every candidate has an equal probability of receiving a job offer.

a) What is the probability that Jennifer will receive at least one job offer?

b) What is the minimum number of such final interviews Jennifer needs to get to guarantee that the probability she will receive at least one job offer is more than 0.9?