In Exercises 19–22, the general term of a sequence is given and involves a factorial. Write the first four terms of each sequence. a_n=(n+1)!/n^2
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10. Combinatorics & Probability
Factorials
4:12 minutes
Problem 26
Textbook Question
Textbook QuestionIn Exercises 23–28, evaluate each factorial expression. 20!/2!18!
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