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Mathematics Senior High

なぜこの答えになるのか分かりません。 どなたでもいいので、教えてください😊

じの中に2本の当たりくじがある。当たりくじを3回引くまで 確率の問題では,Pnが負の値をとらないことと, Pnがnの累乗を含む式で表 「り返しくじを引くものとする。ただし、一度引いたくじは毎回もとに戻す。 tople/par 50 反復試行の確率 P, の最大 要例題 10本のく 0返し n回目で終わる確率を P, とするとき 307 5 (2) Pnが最大となるnを求めよ。 ズ 1) Paを求めよ。 【類名古屋市大) ペー OLUTION CHART 確率の大小比較 H比 最大となるnの値を求めるには, Pa+1 と P,の大小を比較すればよい。 基本 45,47 Pn+1 強が をとり、1との大小を比べる Pn日 2章 Pa+l をとり、1との大小を比べる とよい。 P。 されることから,比 5 答) 回目で終わるのは, (2-1)回目までに2回当たりくじ |2) Paxi 8 2-3 {(n+1)-1}{(n+1)-2) 12 3回目 10」 Pn=n-1( 10 a (n-1)(n-2) n-3 2 ト-3ウト+ (n) …… Pのnの代わり (Pa+エ) n(n-1)/4 \n-2y 1 5 (ら)n+ にn+1とおいたもの。 Jin-1)(n-2) 2. 2 んを -5(n-2) ハtとおく ルがあわころ 4n ミま Pati>1 とすると Pa 4n回 回 5(n-2)-1 I 5(n-2)>0 であるから, 不等号の向きは変わら 3a 下に これを解くと n<10 すなわち 4n>5(n-2) ない。 Pat1-1とすると n=10 キ1 とすると n>10 P 出 Pn P,の大きさを棒の高さ で表すと よって,3SれS9 のとき のとき のとき Pn<Pn+1, P=Pn+1, P> Pn+1 最大 の販売です。 n=10 増加 減少 (11Sn ゆえに PくP、く…<P。<P.o=Pu, P.o= Pu> P2>…… したがって, Paが最大となるnの値は n=10, 11 n めよ う合の求ー T 34 9 1011 12 式口 さいころを,1の目が3回出るまで繰り返し投げるものとする。n回目で終わる確率 をPとするとき,次の問いに答えよ。ただし, n>3 とする。 0 P,を求めよ。 PACTICE …· 50 合せAケ目Aーで6 【類九州工大) (2) Paが最大となるnを求めよ。 |独立な試行·反復試行の確率

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English Senior High

SDGSの英語長文問題です。 答えが配られなくて困っています、、 どなたか問題を解いていただきたいです

Before World War II, Japanese Consul-General Chiune Sugihara was sent to Kaunas to open a consulate service. Kaunas was the temporary capital of Lithuania at the time Reading Refugees in Recent Years J次の英文は第2次世界大戦当時、ナチスに迫害されていた多くのユタヤ人を救った杉原干動。 ついて書かれたものです。英文を読んで、問いに答えなさい。 For Chiune Sugihara u入 boobi 30 signi follim . Ba wrot be o chos. and was strategically situated between Germany and the Soviet Union. After Hitler.。 invasion of Poland on September 1, 1939, a wave of Jewish refugees living in Poland streamed into Lithuania. They escaped from Poland without possessions or money. By 1940, most of Western Europe had been conquered by the Nazis. Most free countries barred the immigration of Jewish refugees from Poland or anywhere in Nazi- occupied Europe. Germany and Soviets were approaching Lithuania rapidly. In July 1940, the Soviet authorities instructed all foreign embassies day to g 35 Lith the Ko all left immediately, but Sugihara managed to obtain permission to extend his Kaunas. Almost a 40 the STTOS stay. in 0quion as taqe On a summer morning in late July 1940, Consul Sugihara and his family awakened to a crowd of Polish-Jewish refugees gathered outside the consulate. Desperate to flee the q ynem CH approaching Nazis and Soviets, the refugees knew that their only path lay to the east. If Consul Sugihara them Japanese transit visas, they could race to possible re freedom. Sugihara was moved by their plight, but he did not have the authority to issue hundreds of visas without permission from the Foreign Ministry in Tokyo. Sugihara wired his government three times for permission to issue visas to the Jewish refugees. Three times he was denied. 45 u d 1 MOLIG- KOinE After repeatedly receiving negative responses from Tokyo, the Consul had a dificult decision to make. He was a man who was brought up in the strict and traditional : discipline of the Japanese. He was a career diplomat, who suddenly had to make a very difficult choice. On the one hand, he was bound by the traditional obedience he c all his life. On the other hand, he thought that he had to help those who were in need. He knew that if he defied the orders of his superiors, he might be fired and disgraced, and would probably never work for the Japanese government again. This # would result in extreme financial hardship for his family in the future. Sugihara even feared for the lives of himself, his wife and children, but in the end he just followed his conscience. The visas would be signed. 72

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Mathematics Senior High

(2)番の意味が分かりません なんでこうなるのか教えてください

P。くPく……く P。くP.o=P, Po=Pu>Pa>… n23 とし, n回目で終わる確率を Pnとするとき 重要例題50 反復試行の確率 P, の最大 り返しくじを引くものとする。ただし, 一度引いたくじは毎回もとに戻す。 O0Od 8 n (1) Pnを求めよ。 (2) Pnが最大となるnを求めよ。 【類名古屋市大) CHARTO OLUTION |基本 45,47 Pat1 をとり、 1との大小を比べる Pn 確率の大小比較 比 ) P. が最大となるnの値を求めるには, P++1 と P,の大小を比較すればよい。 確率の問題では, Pnが負の値をとらないことと, Pnがnの累乗を含む式で表 2章 5 Pn+1 されることから,比 をとり,1との大小を比べる とよい。 Pn 解答) (1) n回目で終わるのは, (n-1)回目までに2回当たりくじ |(2) P.t を引き,n回目に3回目の当たりくじを引く場合であるから 2 2/8 )n-3 2 P=n-1C2l 10 10ノ 10 .a-1)a-2(4)) 13 (マ)( 742-3 ………P』のnの代わり 5 にn+1とおいたもの。 き, nの値 の値も増 1 (n-1)(n-2) n-2 ニ P。 2 5 2 4n nの値が 5(n-2) の値は減少 Pa>1とすると 15(n-2)>0 であるから, 不等号の向きは変わら 4n P。 5(n-2) で学習する。 すなわち 4n>5(n-2) Pas1 - ない。 これを解くと n<10 さPn+1 1とすると n>10 P。 P。の大きさを棒の高さ で表すと 最大 1 とすると n=10 P。 よって, 3<n<9 のとき Pn<Pn+1, P=Pn+1 P> Pn+1 n=10 のとき のとき 増加 11Sn ゆえに の 34 91011 12 n=10, 11 PRIN 確率 308、

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English Senior High

この写真の解答がイマイチ分からないんですが、教えてもらえますか??

ロ 4. The Internet has brought about great changes in our lives. 同意語選択 ロ 5. He was born and brought up in a small country. ロ 7. We are supposed to hand in our paper by next Monday. 口12. The room got cold at night, so we had to ( 第14章 (駒滞大) Ohas cancelled のhas ordered 3has caused のhas been involved in Otrained 2accepted hst (福岡工業大) 3raised のtaught )what caused the loud noise last night. 1 6.I could not ( Ocarry out のfigure out (武蔵野美術大) 3set out のturn out g nedW uliA (日本大) Oexhibit qledの のintroduce ③ produce 09 Osubmit d a8A: Hello, can I talk t0 John, please? 語順整序 T(専修大) B:Iam sorry, but he's out right now. Can I take a message for him? A: Yes, please. I promised to give him a ride to the airport. Please tell him I will ( front / him/in/of/ pick / up) the house at 7:30 tomorrow morning. a80T08 a90() 1ol admuogos ロ 9.John's father ownsa small clothing company. When his father retires, John 大士 will ( ) over the company. lo H (南山大) Orun onTuO 2take vo doot 3control Omanage iog has dec 010.I know I'm a little overweight, so I've decided to join a gym and ( S) Swimming. odoga 9(慶鷹義塾大) Oget up Tenr 2 start off 3take off のtake up U11. Iapplied to a university in Canberra, but I was turned (). Ooff 1(名古屋市立大) Oaround 2back 3 down They ) the heater. or 1(群馬大) Oturn on1o ③ push on のgo on un 2 press on y father happened to find these rare coins when he was traveling abroad two years ago. (国士舘大) のput to use 0came across 3met with 2looked for

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