Question

b. Think of the minimum requirements for passwords in each scenario below. How many possible passwords can be created using the minimum requirements? Show all calculations using proper notation. [4T] special characters: + - ~ ! @ # % & ( ) . < > ? ; [ ] { } _ ^ = | / (space not allowed) digits: 0-9 letters: lowercase [a-z] uppercase [A-Z] i. Credit Card: 5 characters, digits only Digits: 0-9 (10 possibilities) P is the number of possible passwords. 10 represents the number of choices for each of the digit P = 10 x 10 x 10 x 10 x 10 P = 10^5 P = 100,000 So there are 100,000 possible 5-digit passwords. ii. University of Waterloo account: 10 characters, lowercase letters, must include at least 2 symbols There are at least 24 special characters There are at least 26 different letters. iii. INSTAGRAM: 8 characters, lowercase letters, one uppercase letter, one number, one special character.

          b. Think of the minimum requirements for passwords in each scenario below. How many possible passwords can be created using the minimum requirements? Show all calculations using proper notation. [4T]
special characters: + - ~ ! @ # % & ( ) . < > ? ; [ ] { } _ ^ = | / (space not allowed)
digits: 0-9 letters: lowercase [a-z] uppercase [A-Z]
i. Credit Card: 5 characters, digits only
Digits: 0-9 (10 possibilities)
P is the number of possible passwords.
10 represents the number of choices for each of the digit
P = 10 x 10 x 10 x 10 x 10
P = 10^5
P = 100,000
So there are 100,000 possible 5-digit passwords.
ii. University of Waterloo account: 10 characters, lowercase letters, must include at least 2 symbols
There are at least 24 special characters
There are at least 26 different letters.
iii. INSTAGRAM: 8 characters, lowercase letters, one uppercase letter, one number, one special character.

$b. Think of the minimum requirements for passwords in each scenario below. How many possible passwords can be created using the minimum requirements? Show all calculations using proper notation. [4T] special characters: + - ! @ # % & ( ) . < > ? ; [ ] { } ^ = | / (space not allowed) digits: 0-9 letters: lowercase [a-z] uppercase [A-Z] i. Credit Card: 5 characters, digits only Digits: 0-9 (10 possibilities) P is the number of possible passwords. 10 represents the number of choices for each of the digit P = 10 x 10 x 10 x 10 x 10 P = 10^5 P = 100,000 So there are 100,000 possible 5-digit passwords. ii. University of Waterloo account: 10 characters, lowercase letters, must include at least 2 symbols There are at least 24 special characters There are at least 26 different letters. iii. INSTAGRAM: 8 characters, lowercase letters, one uppercase letter, one number, one special character.$

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