# 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.

## Similar Questions

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