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the def for variable is a letter or symbol used to represent a missing number in an algebrac expression
exponentalso in a lower education way....TALLY MARKSLots of symbols were use to represent number like 1 2 3 4 5 ...... etc. There are also other ancient cultures that have different symbols to represent different numbers eg: Chinese culture, Japanese culture. An integer is used when a whole number is being used eg: 1 is an integer, -67 is an integer or 457455754 is an integer. 9.56 is not an integer or -7.8 is not integer. The symbol used to recognize an integer is like Z from the English Alphabet.
An elipsis or * * * is used to present a change of scene.
A rectangle represents any process, function, or action and is the most frequently used symbol in flowcharting
The atomic number.