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  • Set X has x Members and Set Y has y Members.Set Z consists of all members that are in either Set X or Set Y with the exc

    Set X has x Members and Set Y has y Members.Set Z consists of all members that are in either Set X or Set Y with the exception of the k common members(k larger than 0).which of the following represents the members of members in Set
    為什么答案是X+Y-2K
    英語人氣:230 ℃時間:2020-05-13 14:23:28
    優(yōu)質(zhì)解答
    X有x人,Y有y人,Z由所有只單在X,或Y得人,即,除了K個都參加得人組成,Z得人數(shù)如何表示?
    X+Y得結(jié)果是X得人+Y得人,其中,X個人中包含K,y個人中同樣包含K,所以要減2K,樓主明白否?
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