Each character in a password is either a digit [0-9] or lowercase letter [az]. How many valid passwords are there with the given restriction(s)? Length is 18. No character repeats. Starts with: zl Ex: P(11, 4) * P(4, 3) Write permutations as: P(n, k)
Each character in a password is either a digit [0-9] or lowercase letter [az]. How many valid passwords are there with the given restriction(s)? Length is 18. No character repeats. Starts with: zl Ex: P(11, 4) * P(4, 3) Write permutations as: P(n, k)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.6: Permutations And Combinations
Problem 11E
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