1. Consider passcodes that can only contain any letters A, B, C,
D, and E and...
1. Consider passcodes that can only contain any letters A, B, C,
D, and E and numbers 0, 1, 2, 3, 4. A passcode contains 5 items,
and repitition is allowed
(a) [1 point] How many passcodes exist where items can be
repeated?
(b) [1 point] How many passcodes exit where items cannot be
repeated?
(c) [2 points] How many passcodes contain at least a 5 or an
A?
With numbers 2, 3, 4, 5, 7 and 9 three-digit numbers are made without repeating, that...
With numbers 2, 3, 4, 5, 7 and 9 three-digit numbers are made without repeating, that is, no 334-type numbers are allowed. How many different numbers can be formed if
a) There are no restrictions
b) Let them be even numbers
c) They are odd numbers
step by step please
Using these sets
Numerals = {0, 1, 2, 3, 4,5}
Letters = {a, b, c, u,...
Using these sets
Numerals = {0, 1, 2, 3, 4,5}
Letters = {a, b, c, u, x, y, z}
Symbols = {@, #, $, %, ^, &}
Compute the number of passwords for the
following:
a) Passwords of length 5 that may include numerals, letters, and
symbols but must start with a symbol and have no repeated
characters.
b) Passwords of length 3, 4, or 5 that may have numerals or
symbols and have no repeated characters.
c) Passwords of...
5 roles A, B, C, D and E respectively, needs to be sequenced
through a machine....
5 roles A, B, C, D and E respectively, needs to be sequenced
through a machine.
a.) How many ways can a sequence be made without restrictions on
order?
b.) If A should be processed before B, but C, D and E can be
inserted before and after A is processed, how many possible
sequences are possible?
c.) If A should be processed before B, but C, D and E can be
inserted before and after A is processed, how...
State license plates must be 6 characters (0-9, A-Z) in length,
and characters can be used...
State license plates must be 6 characters (0-9, A-Z) in length,
and characters can be used
more than once. How many license plates can be made if you must
start with 2 letters, then 4 numbers?
Calculate the number of passwords from the following character
set {a, b, c, d, e}. Use...
Calculate the number of passwords from the following character
set {a, b, c, d, e}. Use factorial or exponential notation to
express your answer. Also calculate the integer answer. Assume the
passwords contain 5 characters. There are two questions to be
answered below.
• Number of passwords with character
replacement.
• Number of passwords with no character
replacement.
A computer password consists of: • letters {a, A, 6, B,
...,2,Z}, • digits {0, 1,...,9),...
A computer password consists of: • letters {a, A, 6, B,
...,2,Z}, • digits {0, 1,...,9), or = 16 • special characters
{!,@,#,$,%}. In addition, a password must • contain at least one
upper case letter, • contain at least one special character. How
many passwords of length 8 are possible?
We have 1,2,3,4,5,6,7,8,a,b,c,d,e,f
the numbers and letters are in order. How many permutations
(arrangements) are there...
We have 1,2,3,4,5,6,7,8,a,b,c,d,e,f
the numbers and letters are in order. How many permutations
(arrangements) are there in a way that the order is maintained for
numbers and the order is maintained for letters? Explain.