(3) Suppose that the probability for a student to get a free lift to a university on any morning is 0.4. The student needs to get a taxi if she/he does not get a lift and shefhe needs to pay 20 DAR for a Taxi. a. Determine the probability that in a week (five days), the student will get a lift only twice? b. Determine the probability that the student will get his/her first lift on the third day? c. Suppose a given month with 20 days. What is expectation of the amount of money that the student needs to pay in a month. (a) What is the mean number of days until eight computers fail in the same day