math

teresa has to create a password that contains 1 digit and 2 letters. find the number of possible passwords?

how do you do this?

  1. 👍
  2. 👎
  3. 👁
  1. i did 26 *26*9 because there are 26 letters in an alphabet, and just 1 letter can go into 26 (counting its self) and 9 because it has to be 1 number.

    so 26*26*9=6084

    1. 👍
    2. 👎
  2. I will assume that zero can be used as a digit, and that letters can repeat.

    There are 3 ways for the digit and letters to show up
    DLL
    LDL
    LLD

    let's find the number of ways DLL can be done
    = 10x26x26

    the same with the other two, so the number of ways is
    3(10)(26)(26) = 20280

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    A hacker is trying to guess someone's password. The hacker knows (somehow) that the password is 14 characters long, and that each character is either a lowercase letter, (a, b, c, etc), an uppercase letter (A, B, C, etc) or a

  2. Math

    Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is

  3. Math Help

    In a certain state, each automobile license plate number consists of two letters followed by a four-digit number. To avoid confusion between "O" and zero and between "I" and one, the letters "O" and "I" are not used. How many

  4. Probability

    A computer password is required to be 9 characters long. How many passwords are possible if the password requires 2 letter(s) followed by 7 digits (numbers 0-9), where no repetition of any letter or digit is allowed?

  1. Algebra

    a personal identification number consists of 3 letters followed by 3 digits (0-9). the letters x,y and z are not used and the last digit cannot be 0 or 9. how many different identification numbers are possible?

  2. math

    In a three digit number, the hundreds digit is twice the units digit. If the digits are reversed, the new number is 396 less than the original number. Find the number.

  3. statistic

    . A computer password consists of thirteen characters. Replications are allowed.How many different passwords are possible if each character may be any lowercase letter or digit? Enter your answer in scientific notation with two

  4. math

    Suppose a code consist of two letters followed by a digit. Find the number of (a) Codes (b) Codes with distinct letters (c) Codes with the same letters

  1. Algebra

    Carmen is choosing a 3 -letter password from the letters A, B, C, and D. The password cannot have the same letter repeated in it. How many such passwords are possible?

  2. math

    A computer password is required to be 5 characters long. How many passwords are possible if the password requires 2 letter(s) followed by 3 digits (numbers 0-9), where no repetition of any letter or digit is allowed?

  3. Algebra

    The units digit of a two digit number is 1 more than twice the tens digit. If the digits are reversed, the new number is 36 more than the original number. Find the number. Please help!!

  4. Algebra

    A password consists of three digits, 0 through 9, followed by three letters from an alphabet having 26 letters. If repetition is allowed but repitition of letter is not allowed, determine the # of different passwords that can be

You can view more similar questions or ask a new question.