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  • GMAT數(shù)學(xué)一道求解A certain club has 20 members. What is the ratio of the member of 5-member committees that can be formed from

    GMAT數(shù)學(xué)一道求解A certain club has 20 members. What is the ratio of the member of 5-member committees that can be formed from the members of the club to the number of 4-member committees that can be formed from the members of the club?A.16 to 1B.15 to 1C.16 to 5D.15 to 6E.5 to 4貌似我連題都沒看懂?這題不是說把這20人分成5人一組和20人分成4人一組可以形成組數(shù)的比率是多少么?
    英語人氣:229 ℃時間:2020-04-25 10:56:08
    優(yōu)質(zhì)解答
    答案是C嗎?我的理解應(yīng)該是和你一樣. 組合數(shù)問題: C 20 5 / C 20 4 =16:5
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