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The symbol for a factorial is the exclamation point (!). For example, 4! = 4*3*2*1 = 24.
It is the apostrophe symbol, a single character after the number as shown below. No space is required. Symbol: ' Example: 35' = 35 feet
The symbol is: < Example: 8<12 is like saying: "8 is less than 12."
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The greater than symbol is > Example: -5 negative is greater than -10 negative -5 > -10