please answer the following systematically, show the complete solution

9. The probability that an American industry will locate in Munich is 0.7, the probability that it will locate in Brussels is 0.4 and the probability that it will locate in either Munich or Brussels is 0.8. What is the probability that the industry will locate a) In both cities? b) In neither city? 10. Three cards are drawn in succession, without replacement from an ordinary deck of playing cards. Find the probability that the first card is a red ace, the second card is a ten or jack, and the third card is greater than 3 but less than 7. 11. A coin is biased so that a head is twice as likely to occur as a tail. If the coin is tossed 3 times, what is the probability of getting 2 tails and 1 head? 12. A class in advanced physics is comprised of 10 juniors, 30 seniors, and 10 graduate students. The final grade showed that 3 juniors, 10 of the seniors, and 5 of the graduate students received an A for the course. If a student is chosen at random from this class and is found to have earned an A, what is the probability that he or she is a senior