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数学 高校生

⑶なんですけど、問題文には記述がないのに勝手に区別がある、としていいんですか?考え方がよくわかりません🥵🥵

基本 例題22 組分けの問題(1) ..… 重複順列 O000 6枚のカード 1, 2, 3, 4, 5, 6がある。 (1) 6枚のカードを組 A と組Bに分ける方法は何通りあるか。ただし,各組に 少なくとも1枚は入るものとする。 (2) 6枚のカードを2組に分ける方法は何通りあるか。 (3) 6枚のカードを同じ大きさの3個の箱に分けるとき, カード1,2を別の箱に 入れる方法は何通りあるか。ただし,空の箱はないものとする。 基本21 3 4 56 指針> (1) 6枚のカードおのおのの分け方は, A, Bの2通り。 2°通り ただし,どちらの組にも1枚は入れるから,全部をA またはBに入れる場合を除くために (2)(1)で, A, Bの区別をなくすために (3) 3個の箱をA, B, C とし, 問間題の条件を表に示す と右のようになる。よって, 次のように計算する。 (3, 4, 5, 6 をA, B, Cに分ける) ー(3, 4, 5, 6をCに入れない=A とBのみに入れる) 111 A A A D 重複順列で or or or 0r or or B B B -2 -2 D一 箱|A カード|1|2 B|C 3, 4, 5, 6から少なくとも1枚- TSAHO CHART組分けの問題 0個の組と組の区別の有無に注意 解答 (1) 6枚のカードを, A, B2つの組のどちらかに入れる方法は AA, Bの2個から6個取る 重複順列の総数。 26=64(通り) このうち, A, Bの一方だけに入れる方法は ゆえに,組Aと組Bに分ける方法は 64-2=62 (通り) (2)(1)でA, Bの区別をなくして (3) カード 1, カード2が入る箱を,それぞれ A, Bとし,残り の箱をCとする。 A, B, Cの3個の箱のどれかにカード 3, 4, 5, 6を入れる 2通り O S=30 () (2組の分け方)×2! 62-2=31 (通り)つ< =(A, B2組の分け方) (3) A, B, Cの3個から4 個取る重複順列の総数。 3個の箱には区別がある。 Cが空となる入れ方は, A. Bの2個から4個取る重複 順列の総数と考えて 2*通り 方法は 3* 通り このうち,Cには1枚も入れない方法は おっの (岡) S 2* 通り したがって 34-24=81-16=65 (通り)

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英語 高校生

答えをなくしてしまいました、、 合ってるか教えていただきたいです🙇‍♀️

8 | 【]との選択問題】 (配点 15点) ご回の中から 次の英文を読み。空所(1)ご()に入れるのに最も適当なものを, 7 上 よれ思 れ 1 つずつ選び, 記号で答えよ。 人Across the blazing desert of the Sahara ( 1 (one of the longest and heaviest trainsjon Earth、 Mauritanias en Ore Train, the "backbone of the Sahara"' begins its route in 26N8Y0 an iron RM in the center/of Mauritaniaノ and ends「 im Nouadhibou) a city/on the coast ) The 22000 tons/of iro mined daily are poured into 220 iron *hoppers。 These hoppers are linked together to make the train, Which can be as long as 3 kilometers and can have several *1ocomotiveS. ( 2 ) transporting iron ore is the trains main purpose, people can hide(in the hoppers) fork out 5 $3 to claim space on one of the benches inside two DSSenger Cars, or, most commonly。sit 6 top of the ore。) Passengers travelling on this train should expect to face some harsh conditons、 3 The 704kilometer journey can take (from 16 to 21 hours,( 3 ) the weight of the ram. There are no bathrooms or food. The train Shakes violently throughout the tip: when it starts moving, the train Cars frequently slam.into one another) During the day, the sun beats down Qn Dassengers riding outside the train and 紀 temperatures can quickly reach 40 degrees Celsius or higher. At night, under the Hight of the Milky Way, temperatures in the desem become achingly cold. One passenger has said, “Tf the train goes through a Sandstorm、 de /Why, then, would people want to ride it? Some thrilseekers might want 1 you feel like you want experience this extreme journey through one of the m S the wor) Mostly,( 4 ),passengers are merchants, ee to support their livelihood and provide food and Supplies (9 2 Sahara/ Passengers wrap their heads with long pieces of cloth to protect 、the wind sand, and sharp bits of iron dust that fy through the air. t *charcoal into the piles of iron, light it and make tea, 【 5.)t time, however, they sleep. 〔 5

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英語 中学生

問2までは無理矢理やったんですけど3からわからなくて。。。 1と2も間違ってたら指摘してください!

四 mez (表量のみ) 次の圏、回に答えなさい。 genetically modified food) 還 次の英文は ジョューンス先生(Mr Tones)がクラスの生徒たちと遺伝 子組み換え食品( と農薬(agricultural chemicals) について話している場面のものです。これを読んで 1 ーーーーで| There are toOo many people Kota : ] wat blems last night. mwatched a TV program about food proble mn in the future. liVing in the world, so there wont be enough food for all of the Saki : IT saw it,too、The food problems are more difficult than math problems. | Kota : 1 think farmers should produce more "CrODS. for people to eat. | Saki : My "parents are farmers、They say their job js to produce enough cropS TTP 。 | They wull also | Crops will die i there are *weeds around them or they have diSeaSe- | die if there are many bad weather days. | | Kota : Does that mean itS not easy to produce more crODS? SNSIT6S difficult。My parents always worry about their CrODS. ら 過 IMr Jones : Do you think genetically modified food wi help to produce HOTE CTODS: | Saki 1 dont know much about it. Mr.Jones : We have *genes that come from our parents. They carry informa lants, too. Short legs or long legs or black hair or red hair. GeneS are found in all animals and pla | Kota : My father has long hands and I have long hands, to0. tion about you,Such aS | IMr jones : And some *scientists put a gene into crops and it could make the croDS StrOngeT against |15 agricultural chemicals。 When farmers “spread the agricultural chemicals over their | genetically modified crops, weeds die but the crops dont | Eota : Thats greatl They will help your parents with their work. Sakt | Mr Jones : Butthere are some problems. People see fewer "honeybees In America now. Agricultural chemicals may be *killing them. Kota : Really? Honeybees put *pollen from one flower on another one to help it to *grow. Without honeybees, we wi not have fruits, *vegetables. and other plants. | ] Saki : We will die soon without food. And now in many parts of the world. (alot of / die / mare / children / because / there / who) there isnt enough food for them to eat. IKota : Yes, and *at the same time, there's a lot of *unsold or leftover food in restaurants. food |25 Ia | Stores, and even at home, Tlearned it when 1 watched the program last night. 1 couldnt believe there was more leftover food at home. Mr.Jones : Do you know a "food bank? There are many food banks in America. They *gather such food and give it to people *in need. Tread about it im the newspaper. There are some in japan、too. 1 hope all of us 30 each other and can eat enough food、 YYe should think of the best way to do so. 農家(の人) crop(s) 作物 parents 両親 weed 雑草 disease 病気 子 。 mformation 情報 scientist 科学者 spread まく honeybee(s) みつばち pollen 花粉 grow 育つ Vegetable 野菜 atthesametime 同時に - 売れ残り と食べ残しの食糧 "food bank フードバンク gather 集める 英記

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