In 1835, Samuel Morse, a professor of art at New York University, devised a code that could be transmitted over a wire by using an electric current. This was the invention of the telegraph. The code used is called Morse code. It consists of a dot or a dash or a combination of up to 5 dots and/or dashes. For instance the letter "c" is represented by —•—• How many different symbols can be represented using Morse code?
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
In 1835, Samuel Morse, a professor of art at New York University, devised a code that could be transmitted over a wire by using an electric current. This was the invention of the telegraph. The code used is called Morse code. It consists of a dot or a dash or a combination of up to 5 dots and/or dashes. For instance the letter "c" is represented by —•—•
How many different symbols can be represented using Morse code?
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