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英語 高校生

一応自分で解いてみたんですけど、④がよくわからなかったので教えて下さい😭😭🙇‍♀️🙏

長文を読む 1. 甲南大学 目標解答時間20分 Is In the 1920s American movies filled the cinema* screens of the world. Most were made in 郊外 Hollywood, a suburb of Los Angeles, in California. Hollywood's big attraction for film-makers was its clean air and sunshine. The movies made there were bright and clear. By the 1920s it had become the film-making capital of the world. HOT ning sibisbaste Maomhsnob vildung, Hollywood movies were made by large companies called studios. The men who ran these boowellpH ei obam eşivom NSROMA FOR STOWW studios were businessmen and their main aim was to make as much money as possible. They eslognA zo.llo eduduz si mixt boot semool 69 adı ni come do enim mobbe i soon found that one way to do this was to (1) standardize* their films. When audiences had 185s d is si BAT-silyte sii seino blowodi 16 lasins anim-mlit od zew boow lig shown that they liked a certain kind of film, the studios made many more of exactly the same kind. Solit tiedi svibnsbasız(1) 21 aninsom ni 122colo da bistars were Another sure way for a studio to make money was to (2) turn its actors into "stars." stil vlieb wone-thr 291700 Tosun sis 29 il ngibus ob es esiyor to bridomy, M vonom to jol som si zivom SAM actors who were so popular that people went in crowds* to see any film they appeared in, no matter bisbristes amosad redivom sole MD A famous star could make any movie a sure success. So the studios how good or bad it was. 21612 00 210106 21 went to great lengths* to make their actors into stars. (S) 01 ob 20ibure du bib jew They encouraged fan magazines. They ob 9 16 2016 2 e sivom vas sisMS 2012 196snt bas esnissgsm nisl noqqu set up special publicity departments* to get stories about their actors into the newspapers. The movies of the 1920s were silent. They bisbasse mod, om to spoke through expressions and movements, not in f H THE LOYAT 1500 words, and so their language was international. All over the world, from Berlin to Tokyo, from night of the week to see the ople lined up every London to Buenos Aires, tens of millions of people lined √ SU OJANE JA AJANSAZETHO A USA (X TO favorite Hollywood stars and, without realizing it, to be Americanized. AANSE AJR

解決済み 回答数: 1
数学 高校生

場合の数です。解説、別解どちらを読んでもよく分からないので教えてください🙇‍♀️

基礎問 186 第6章 順列・組合せ 113 重複組合せ 区別のつかない球5個をA,B,C3つの箱に入れる。 どの箱にも少なくとも1個の球が入る方法は何通りあるか、 (2) 1個も入っていない箱があってもよいとすれば、 何通りの方 法があるか. 精講 A,B,Cの箱に, それぞれ個, y個 2個入るとすると, (1),(2)は,それ ぞれ,次の方程式の解 (x,y,z) の組の数を求めることと同じになります。 (1)x+y+z=5 (x≧1,y≧1, z≧1) (2)x+y+z=5 (x≧0 y≧0, z≧0) 解答では,まず拾い上げてみて, あとで計算による解法を考えてみましょう。 解答 A,B,Cの箱にそれぞれ, x個, y個, z個入るとする. (1) x+y+z=5 (x≥1, y≥1, z≥1) x = 1,2,3 だから, (x,y,z) の組は次表のようになる. IC 1 1 2 2 3 2 3 2 (2) x+y+z=5 (x≥0, y≥0, z≥0) 1万円札が5枚あるとき (これらは区別がつきません),どの1万円 札がほしいという人はいません。 何枚ほしいというはずです.だか ら,区別がつかない球のときは個数で考えます. y 2 2 1 1 3 1 2 1 よって6通り 1 2 1 1 基準をもって数え上 げる IC 0 0 0 0 0 0 1 1 1 112222 3 3 3 4 4 5 y 012345 012340 1 2 3 0 120 10 543210432103 210 210100 よって 21通り 注 この問題のように, 変数に関して条件が同じ (このことをx,y,z は対称性があるといいます) であれば、次のように大小を仮定して数 えて,あとで並べ方を考える方がラクです.

解決済み 回答数: 1