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Anonymous
Anonymous asked in 科學數學 · 1 decade ago

誰可以幫我解出統計學題目(英文)的答案?((急))

1、In an optics kit there are 6 concave lenses, 4 convex lenses, and 3 prisms. In how many ways can choose one of the concave lenses, one of the convex lenses, and one of the prisms?

2、In a small geology class, each of the 4 students must write a report on one of 8 field trips. In how many different ways can they each choose one of the field trips if

(a) no 2 students may choose the same field trip;

(b) there is no restriction on their choice?

3、In how many ordered ways can a television director schedule 6 different commercials during the 6 time slots allocated to commercials during the telecast of the first period of a hockey game?

4、Determine the number of ways in which a manufacturer can choose 2 of 15 locations for a new warehouse.

想麻煩會的人幫我解出答案。

因為本身課本是原文書的。

所以我只好打英文。

我不是要翻譯喔。

我是要這些題目解出來的答案

中文英文數字都可以。

拜託各位~麻煩各位會的人嚕!^^

非常感謝。。。。

1 Answer

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  • 1 decade ago
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    我覺得你的這些問題應該是排列組合裡的乘法原理 不知道這樣解答是否正確 參考看看吧

    1.6x4x3=72種方法

    2.8x7x6x5=1680

    3.6x5x4x3x2x1=6!

    4.15x14/2=105

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