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    Combinatorics Symbols

    List of Combinatorics Symbols
    Source: https://www.rapidtables.com/math/symbols/Basic_Math_Symbols.html
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Symbol: n!
Symbol Name: factorial
Meaning / definition: n! = 1⋅2⋅3⋅...⋅n
Example: 5! = 1⋅2⋅3⋅4⋅5 = 120
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Symbol: nPk
Symbol Name: permutation
Meaning / definition: _{n}P_{k}=frac{n!}{(n-k)!}
Example: 5P3 = 5! / (5-3)! = 60
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Symbol: nCk

 

Symbol Name: combination
Meaning / definition: _{n}C_{k}=binom{n}{k}=frac{n!}{k!(n-k)!}
Example: 5C3 = 5!/[3!(5-3)!]=10
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