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Combination formula

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Thecombinationformulaisusedtofindthenumberofwaysofselectingitemsfromacollection,suchthattheorderofselectio...
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說明
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Thenumberofcombinationsofnobjectstakenratatimeisdeterminedbythefollowingformula:C ...
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Theformulaforpermutationsandcombinationsarerelatedas:nCr=nPr/r!Q6.Givetheapplicationsofpermutationandcombi...
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Thenumberofcombinationsisthenumberofwaysinwhichwecanselectagroupofobjectsfromaset.Forexample,ifyouhave'n'o...
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