Consider the following definitions for sets of characters: Digits {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} = Letters = {a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z} Special characters = {*, &, $, #} Compute the number of passwords that satisfy the given constraints. Express your answer in powers of 40, do not evaluate to a single numeric value. a Strings of length 6. Characters can be special characters, digits, or letters. b Strings of length 7, 8, or 9. Characters can be special characters, digits, or letters. c Strings of length 7, 8, or 9. Characters can be special characters, digits, or letters. The first character cannot be a letter.

C++ for Engineers and Scientists
4th Edition
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Bronson, Gary J.
Chapter8: I/o Streams And Data Files
Section: Chapter Questions
Problem 8PP: (Data processing) A bank’s customer records are to be stored in a file and read into a set of arrays...
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Consider the following definitions for sets of characters:
Digits {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
=
Letters = {a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z}
Special characters = {*, &, $, #}
Compute the number of passwords that satisfy the given constraints. Express your answer in powers of
40, do not evaluate to a single numeric value.
a Strings of length 6. Characters can be special characters, digits, or letters.
b Strings of length 7, 8, or 9. Characters can be special characters, digits, or letters.
c Strings of length 7, 8, or 9. Characters can be special characters, digits, or letters. The first character
cannot be a letter.
Transcribed Image Text:Consider the following definitions for sets of characters: Digits {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} = Letters = {a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z} Special characters = {*, &, $, #} Compute the number of passwords that satisfy the given constraints. Express your answer in powers of 40, do not evaluate to a single numeric value. a Strings of length 6. Characters can be special characters, digits, or letters. b Strings of length 7, 8, or 9. Characters can be special characters, digits, or letters. c Strings of length 7, 8, or 9. Characters can be special characters, digits, or letters. The first character cannot be a letter.
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