Question: 8. (a) How many 5-letter words spelled using 'a', 'b', 'c', 'd', 'e' become the word 'xxyyy' after letting a = b = x and

8. (a) How many 5-letter words spelled using 'a', 'b', 'c', 'd', 'e' become the word 'xxyyy' after letting a = b = x and c = d = e =y? (b) Find the number of 5-letter words that can be spelled using 'x', 'x', 'y', y', y' by dividing your answer to 4e by your answer for 8a. (c) Check your answer to 8b by listing out all possible 5-letter words spelled using 'x' , 'x' , 'y' , 'y' , 'y' (d) Summarize your answer to 8b using factorial notation: ( )

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