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As many as you like and not just from the Roman alphabet.
However, it would be sensible to avoid letters that are similar, in shape, to numbers to avoid confusion. Forexample, O and 0. Or l and 1, or 2 and Z, or 5 and S.
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∙ 13y ago
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Are letters used as variables?
Yes, English and Greek characters (letters) are the most frequently used symbols for variables.
What is a board with numbers letters and symbols used with a planchette?
OUIJA
Which is used for chemical symbols today numbers drawings letters icons?
there are lots of chemical symbols about 110 but they are only used for elements not compounds.
What are symbols that are used to represent unspecified numbers?
Variables (letters like x and y)
Are Roman numerals and Greek numeral the same thing?
No. The Romans used letters to represent quantities. Whereas the Greeks used letters and symbols to represent quantities.
Why are letters used in the periodic table?
Because it's easier than having to write them all out every time. Also, they get their symbols from their Greek names.
What is meant by term symbols?
The symbols of a chemical element are abbreviations that are used to denote a chemical element. Typically, they are one or two letters long with the first letter (only) capitalised; temporary names are three letters long.
How many different symbols are used in the hexadecimal system?
There are 16 symbols.
How do you write Randy in Hebrew symbols?
Hebrew doesn't use symbols. It uses letters. "Randy" in Hebrew letters is ראנדי
What does coded mean?
a system of words, letters, symbols, or numbers used to deliver messages or a set of rules
Are symbols and pictures examples of input or output devices?
no but the key board used to type letters is an input device , the mouse used to select symbols and the scanner used to store digital information of pictures are input devices
How many lines of symmetry does a keyboard have?
zero, all the keys have different letters, numbers, or symbols
