灵鹊做题网GMAT数学一道求解A certain club has 20 members.What is the ratio of
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GMAT数学一道求解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貌似我连题都没看懂?这题不是说把这20人分成5人一组和20人分成4人一组可以形成组数的比率是多少么?
答案是C吗?我的理解应该是和你一样.组合数问题：C205/ C204=16：5
GMAT数学一道求解A certain club has 20 members.What is the ratio of
GMAT数学一道求解A certain club has 20 members. What is the ratio o
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