なぜC’もとるんですか？ A→C→P→Bではだめですか？

重要 例題 50 平面上の点の移動と反復試行 右の図のように、東西に4本, 南北に4本の道路が ある。地点Aから出発した人が最短の道順を通って 地点Bへ向かう。このとき,途中で地点Pを通る確 率を求めよ。ただし,各交差点で,東に行くか,北 に行くかは等確率とし,一方しか行けないときは確 率1でその方向に行くものとする。 00000 A 基本 CHART & THINKING 求める確率を A→P→Bの経路の総数 A→Bの経路の総数 から, 4C3×1 とするのは誤り! 6C3 この理由を考えてみよう。 例題 51 10本のくじの 返しくじを引 n≧3とし (1) P を求め CHART & 確率の大小比 (2)Pが最大 確率の問題 から,比 は、どの最短の道順も同様に確からしい場合の確率で,本問 は道順によって確率が異なるから, A→Bの経路は同様に 確からしくない。 例えば, A1 1/2×/×1/2×/×1×1-1/16 PBの確率は A1PBの確率は1/2×1/2×1/2×1×1×1-1/8 A よって,Pを通る道順を, 通る点で分けたらよいことがわかるが,どの点をとればよいだろ うか? 解答 右の図のように,地点 C, C', P' をとる Pを通る道順には次の2つの場合があり,これらは互いに 排反である。 [1] 道順 AC′ →C→P→B この確率は 1/2×1/2×1/2×11×1 = 1/18 [2] 道順 AP′ →P→B この確率は iCa(1/2)^(1/2)x1/1/2×1×1=1/16 3-6 X1> よって, 求める確率は 1 3 5 + 8 16 16 PRACTICE 50Ⓡ (1) n回目 じを引き、 よって Pn+1_ (2) Pn B Pn+1 P P A C' C CPは1通りの道順であ ることに注意。 [1] →→→↑↑↑と進む。 [2] ○○○↑↑と進む。 ○には2個と1個 が入る。 Pn すなわ Pn+1 PR よって ゆえに したか 右の図のように、東西に4本, 南北に5本の道路がある。地 P 点Aから出発した人が最短の道順を通って地点Bへ向かう。 このとき,途中で地点P を通る確率を求めよ。 ただし, 各交 差点で,東に行くか, 北に行くかは等確率とし, 一方しか行 けないときは確率1でその方向に行くものとする。 B PRACT さいこ をPl

正しい英文を2つ選ばないといけないのですがどなたか教えて欲しいです。お願いします。

J. This is the only book I have found it which contains the latest information. 1. The number of students who want to study abroad are increasing these days. . He is the very person that I have been looking for since I lost my way. I. Most of the furniture in this room were made by my grandfather long ago. *. I have two brothers; one is a doctor and another is a lawyer in London. . Do you know the reason why he was absent from the meeting yesterday?

正しい英文を2つ選ばないといけないのですがどなたか教えて欲しいです。お願いします。

J. If I had had enough time then, I could have finished the task easily. 1. What a beautiful day is it today to go for a drive to the seaside! . A ten-minute walk brought us to the lake located at the foot of the mountain. I. It is very kind for you to show me the way to the station in the rain. *. She is one of the students who has won the first prize in the contest. . I am looking forward to see you again at the party next Saturday night.

間違っている英文を3つ選ぶのですが、7 の他にあと二つがわかりません😭どなたか教えてください🙇‍♀️

1. 2. 3. 4. 5. 6. 7. 8. I am sure that he will be able to solve the problem by himself. If I were you, I would tell the truth to your teacher right now. My father told me that the sun rises in the east every morning. It is one of the most interesting book I have ever read in my life. She has been lived in this small town for more than twenty years. This computer is much more expensive than the one I bought last year. I am looking forward to see my friends at the school festival next week. The song which was sung by the singer became very popular all over Japan. You should finish your homework before you go to play soccer in the park. 10. He is too busy to help us with the heavy boxes in the classroom.

高校英語の問題です。 (21) (26) (24)の答えを教えてください🙇‍♀️

3 正 問題 誤りのある箇所を選び、正しい形を書きなさい。 22は誤りのある箇 所がなければNO ERROR を選びなさい。 121 In lists of the most speaking languages of the world, it has been ② customary to rank them by order of their total numbers of speakers, although there are considerable difficulties in gestimating more than very approximate totals. (学習院大) りのある箇所 正しい形 □□ 22 Nothing seems to irritate William more than having to explain his actions in that unfortunate ③ matter to everyone with who he talks. NO ERROR (早稲田大) 祭りのある箇所 正しい形 4 with whom □□ 23 The bus arrived ② lately on account of rain, so we ③ missed the train we were supposed to take. (桜美林大) D 誤りのある箇所 正しい形 to lately □□24 By means of my excitement about the interview tomorrow and the ② noise ③ from upstairs, I couldn't sleep. 誤りのある箇所 had 正しい形 small ■□ 25 Frankly speak, I find the class boring. (立命館大) (東洋大) 誤りのある箇所 Charlo ③ 正しい形 spoke □□ 26 Another award winner was “Paro," a furry seal* which has sensors beneath gits fur and whiskers. When the seal is stroked, it responds by opening and closing its eyes and move its flippers**. * furry seal : 毛皮におおわれたアザラシ **flipper : ひれ足 誤りのある箇所 正しい形 (中央大)

3.4.6を教えていただきたいです。ア、ウ、アと答えましたが違いました。おねがいします🙇

第8章 STEP 2 C 1 次の各文の( )に最も適切なものを選びなさい。 (1) I remember (id) this book when young.ibom od aum〈学習院大) that I have read I to read like ( ) to the party tonight. tomto go not having answered ア read 1 reading (2) I don't feel like ( ア go イ going ウ (3) I'm sorry for ( ) your e-mail sooner. 7 not to answer (4) "not to have answe I no answering ア sold イ to be sold oled o having sold (5) I'll never forget ( Kofu when I was young. ア to visit to have visited ウ visited I to going < 桜美林大〉 Boy fabia (1) baord 〈神奈川大 > I being sold 〈 山梨大) I visiting (4) Before ( ), this very large building was used as a dormitory. 1 I ) to learn to play the flute. It's just too difficult for me. (6) I ( 7 gave up for me to try 2 〈慶應義塾大〉 eqod I (8) xam III (e) gave up my trying have given up trying had to give up to try sofil eas (7) My parents don't like ( ) home. <獨協大〉 イ 330) a smoking us smoking us at us smoke I us smoking at of daaw d'aob I (8) I never see this photo without ( ) my happy days in the countryside. 7 reminding of 1 (9) My mother objected ( ア to my climbing for me to climb reminding being reminded of I reminded of ) the mountain alone. 〈 南山大 〉 1 on my climbingo aldiaeoqmi ai 11 イ I me in climbing (8) ai 919dT

お願いします

彼女はあなたよりも勤勉です。 She is you.

(1、２)合っていますか？間違えていたら、間違いを教えてほしいです p19

PWriting Skills さ 1. マイクとケイトは知り合って5年になる。 2. 父は昨日からずっとスマートフォンを探している。

全くわからなくて色々調べなながらやってたら半ページに3時間もかかりました、、 これは遅い方ですか？

Dialogue A: Speaking of school, what's your favorite subject? 学校と言えば、いちばん好きな科目は何ですか。 B: It's English. 英語です。 A: Me, too. 私も同じです。 1 ( 内から適切なほうを選びなさい。 A 1000000 1. (Seeing/Seen) from a distance, the two buildings look alike. 2. (Knowing not/Not knowing) how to get there, I asked the way. 3. (Moving/Moved) by his song, the audience gave him a big hand. 4. My father told a good joke, (making/made) my mother laugh. 5. (Building/Built) of brick, the house looks elegant. 6. (Having/Had) a lot of homework, my brother couldn't watch TV last night. 2 [ ]内の動詞を適切な形にして下線部に入れなさい。 ただし, それぞれ1回しか使えません。 200000 1. 2. 3. 4. Not 5. Never up at five this morning, I feel sleepy now. kind and friendly, Mike is loved by everybody. alone, I felt lonely. [be/feel/get/leave/try] well, I went to bed early last night. the video game before, I didn't know how to do 3 各組の文がほぼ同じ意味になるように,( )に適切な語を入れなさい。 A B 1. (a) I read a book and lay down on the bed. (b) I read a book, ( ) down on the bed. 2. (a) While Sally was walking along the river, she met an old friend. (b)( ) along the river, Sally met an old friend. 3. (a) They spent some time together and fell in love with each other. (b) They spent some time together, ( 4. (a) As Tom had worked overtime, he was really tired. (b) ( )( ) in love with each other. ) overtime, Tom was really tired. 5. (a) Because he had never seen a panda, he was glad to see one in the zoo. (b) ( )( in the zoo. ) ( ) a panda, he was glad to see one

英語読解の問題です。 下の写真の問題について答えが載っていないのでどなたか模範解答作ってほしいです、よろしくお願いします🙇💦

Which floor am I on?! Blog This is a picture I took in an elevator in Hong Kong. If you look carefully, you'll see that the numbers 4, 13, 14, and 24 are missing. This is because Hong Kong was once a British colony, so the culture of Hong Kong reflects both Chinese and British superstitions: 4 is considered an unlucky number in China, while 13 is in the U.K. It is interesting to learn about the differences in culture and customs between countries, and knowing the history of a place helps us understand local customs. 3 M 110 10 18 25 9 17 23 2 8 16 22 1 7 15 21 G 6 12 20 LG 5 11 19 Elevator buttons in a Hong Kong building Task 1 Analyze the passage. Overview . What is the main topic of this passage? to Contents (1) What is strange about the picture? airi to slaid woy obj (2) What countries have influenced the culture of Hong Kong? (3) What helps us understand local customs? 5