Problem 2. At Halloween a child brings home a big bag of candy. The bag contains 10 kinds of candy, with at least 20 candies of each kind. Among them there are Kit Kat and Mars bars. In how many ways can she pick 20 candies from the bag if (a) exactly 3 candies will be Kit Kat bars? Explain (b) at least 4 candies will be Mars bars? Explain.

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a To find the number of ways the child can pick 20 candies from the bag where exactly 3 candies will ... View the full answer