2
$\begingroup$

What does "String" mean in context of counting theory ? For example :

There are 8 binary strings of length 3 .

What does binary and length signify here ?

Edit : I want to specifically why it is called a String ?

  • 0
    It says there are $8$ three-letter "words" using the alphabet $\{0,1\}$. Here are a few: $000$, $001$, $010$, $011$, $100$, three more to go.2012-08-04
  • 0
    @AndréNicolas I edited the question slightly . I want to know why it is called String ?2012-08-04
  • 0
    For variety. Like a string of beads. "Sequence" is common too, kinda boring. "Word" is freqently used also. All of these terms convey the notion that order is important.2012-08-04

1 Answers 1

2

binary string means $\textit{a sequence of 0's and 1's}$ and the length defines the number of elements in the sequence.

Like $10011$ is a binary string of length $5$, $110011100$ is a binary string of length $9$ etc.