Question: Hello, I need help with questions 1a, 1b, 2 and 7b. If you could please show the work on how you get the answer. thank
Hello, I need help with questions 1a, 1b, 2 and 7b. If you could please show the work on how you get the answer. thank you!
1.A student must select four elective courses from a total of twelve offered by the college in her major.
(a)How many ways to select the four courses are possible? (order does not matter)
(b)If the order in which these courses is important, in how many ways can they be selected? (in other words, how many permutations of four courses out of twelve?)
2.A randomly selected freshman takes English with probability 0.6, takes Math with probability 0.5, and takes either English or Math with probability 0.8. What is the probability of taking both English and Math?
7.A box contains 5 blue chips, 4 red chips, and 7 green chips. Select 10 chips at random.
(a)In how many ways can this be done?
(b)How many of these selections consist of 3 blue chips, 2 red chips, and 5 green chips?
(do not simplify your answers, leave them in terms of binomial coefficients).
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