A 9th class has 15 boys and 30 girls. Two representatives are to be selected at random from the class. Find the probability that, (i) the first representative is a girl.
(ii) the second representative is a girl, given that the first representative is a boy.
(iii) first is a boy and second is a girl.
(iv) a girl and a boy is selected as representatives.

After jeff bezos read about how the internet was growing by 2,000 percent a month, he set out to use the internet as a new distribution channel and founded amazon, which is now the world's largest online retailer. this is clearly an example of a(n)a. firm that uses closed innovation. b. entrepreneur who commercialized invention into an innovation. c. business that entered the industry during its maturity stage. d. exception to the long tail business model