math

posted by .

If you wanted to code 94 distinct characters, such as those found on a coputer keyboard, how many dots would the system need?

  • math -

    If I understand your question correctly,

    using 1 dot -- 1 way
    using 2 dots -- 2! or 2 ways
    using 3 dots -- 3! or 6 ways
    using 4 dots -- 4! or 24 ways
    running total = 33
    so we have to go to 5 dots, which would give us an extra 120 ways, enough to handle the 94 needed.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Morse Code Please Answer!

    My book doesn't explain how, for example, if D was --. and O was .-. than how would they tell the end of the D from the beginning of the O?
  2. Chemistry

    Can you tell me if i did these right?? Lewis Dot Structure A. BrF = 5 dots around Br-F with 5 dots around it B. PBr3 = ?
  3. math

    Louis Braille devised a system of six raised or not-raised dots to signify a letter of the alphabet. a) How many different letters or characters may be coded in Braille?
  4. Data Management (Math)

    A Canadian postal code uses six characters. The first, third, and fifth are letters, while the second, fourth, and sixth are digits. A U.S.A zip code contains five characters, all digits. How many codes are possible for each country?
  5. math

    I know that the obvious pattern between circle and square alternates. If you have a circle with 6 dots inside, then a square with 6 dots inside, then a circle with 6 dots inside, then a square with 6 dots inside. i know the next one …
  6. Math

    1.) A security code has seven characters. Each code begins with two digits, then two letters, and finally three digits. the number of distinct security codes possible if repetition is allowed?
  7. programming

    Write a C++ code to count the number of characters, words, and lines entered by the user. The program stops if the user enters two dots.
  8. Computer Science Principles

    I need to know what's wrong with my code and it's supposed to be in the Next-Line blocking style. import java.util.Scanner; public class AreaOfCircle{public static void main(String[] args) { double PI = 3.14159;double get_this; double …
  9. MATHS

    d/f coes each consisting of 5 characters are to be generated. In each code the first two characters are A or B and the remaining three characters are any of the digits 0,1,2,...9 How many distinict codes be generated so?
  10. Technology

    How mis typing speed measured? In characters per second In characters per minute In words per minute •• In words per second What is special about F and J keys on a standard keyboard?

More Similar Questions