box in a certain supply room contains six 40-W lightbulbs, three 60-W bulbs, and seven 75-W bulbs. Suppose that three bulbs are randomly selected. (Round your answers to four decimal places (a) What is the probability that exactly two of the selected bulbs are rated 75-W? (b) What is the probability that all three of the selected bulbs have the same rating? (c) What is the probability that one bulb of each type is selected?

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A: The answer is in step 2.

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Q: ARE YOU SURE ABOUT PART 2 ?

A: which is constant.

Q: Sorry about that. Here is question 2 of the same worksheet.

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