Re: [計量] 請教一題比大小
※ 引述《oogu (a Who)》之銘言：
: 請教一題比大小：
: Of the 7 members of the city counsil, 4 are Democrats and 3 are Republicans.
: T is the total number of different 3-person committees that can be appointed
: from the council membership such that each comittee consists of 2 Democrats
: and 1 Republican.
: A) T
: B) 15
: 答案 A，即 T > 15。
: 我反覆看了幾次，還是讀不懂題目的意思，請高手指點！
我也不太確定，但我算出來是T=18 ?
所以給你參考一下
city counsil = 4D+3R
題目要求 T= total number of 不同的三人組成(2D+1R)的委員會。
所以我以為 C4取2 * C3取1 應該就是答案XD
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