a learner-driver is determined to pass the driving test eventually. the probability that the learner- driver will pass the driving test on any one occasion is 1/3. each time the learner-driver takes the driving test, he has to pay $500. find the probability that the learner-driver will (a) fail the test in both his first and second attempts, (b) fail the test in his first three attempts but pass the test in his fourth attempt, (c) spend exactly $3000 on driving test, (d) spend more than $1000 on driving test.