Question

The company has agreed on an 8 character password format, comprised of upper case letters , lower case letters, and digits (0-9). Find the number of passwords possible where the first 2 characters have to be upper case letters, the next 5 can be lower case letters or digits , and the last character has to be an upper case letter. Here are the restrictions:

a. Repetitions are allowed

b. Repetitions are not allowed

Answer #1

1. The company has agreed on an 8 character password format,
comprised of upper case letters , lower case letters, and digits
(0-9). Find the number of passwords possible where the first two
characters have to be upper case letters, the next 5 can be lower
case letters or digits , and the last character has to be an upper
case letter. Here are the restrictions:
a. Repetitions are allowed
b. Repetitions are not allowed
2. 30 people were asked...

1) Assume that a password can contain upper and lower-case
letters (26), digits, and special characters from the set { !, #,
$, %, &, * }. Furthermore, each password must start with a
letter and must contain at least one digit and one special
character. How many different six-character passwords can be formed
according to this specification?

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?

Determine the number of passwords comprised of 3 upper case, 3
lower case letters, 4 digits, and 2 special characters (these
include #$&*()!?^[], so 11 in total)

DISCRETE MATH.
If passwords contain letters(lower and upper case), numbers
(0-9) and can use these special characters(!,@,#,$,%)
how many 8 character long passwords are possible?
One character has to be an uppercase and another one has to be a
special character.

Motorola has developed an edible password pill. When the pill is
ingested, it is activated by the acid in your stomach emitting an
18-bit signal which is strong enough to communicate and unlock all
your devices. The edible password pill won’t be available in the
near future, but it is already FDA approved. A computer system uses
passwords that contain exactly six characters, and each character
is one of 26 lower case letters (a, z), 26 upper case letters (A,...

A computer password is required to be 6 characters long. How
many passwords are possible if the password requires 1 letter(s)
followed by 5 digits (numbers 0-9), where no repetition of any
letter or digit is allowed?
There are possible passwords.

For a certain computer program a password must be exactly 5
characters long. The first character can be any lowercase letter,
the second must be an uppercase letter, the third character must be
a number from 0 – 9, the fourth character can either be a lowercase
letter or a number 0 - 9, the fifth character has to be exactly the
same as the first character.
(6)
How many possible passwords are there?
What is the...

Students in a college are allowed to chose their own passwords
consisting of three (3) digits and three (3) lower-case letters, in
that order. How many different passwords are possible if a.
repetitions allowed? b. repetitions are not allowed? c. The first
character cannot be 0, with no repetitions are not allowed?

A system administration of our school has instituted the
following rules when it comes to the creation of our school’s email
password: (i) A password must be exactly 8 characters long;(ii) A
password must begin with an uppercase letter; (iii) The last
character of a password must be a digit. The character set from
which a password can be created includes numerals (digits), upper
and lower case letters. Determine the maximum number of passwords
available.

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