5. How many words from the Roman alphabet (26 letters) of length 45 have (a) No A's? (b) At least one A? (c) Exactly 3 A's? (d) Exactly 4 B's? (e) Exactly 3 A's OR exactly 4 B's? (What counting rules should you be using here?)
5. How many words from the Roman alphabet (26 letters) of length 45 have (a) No A's? (b) At least one A? (c) Exactly 3 A's? (d) Exactly 4 B's? (e) Exactly 3 A's OR exactly 4 B's? (What counting rules should you be using here?)
Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 42RE: How many distinct rearrangements of the letters of the word DEADWOOD are there if the arrangement...
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