(2)(3)の違いがよく分かりません。右ページの➗3！ をする理由を読んでもまったく分かりません。誰か教えて欲しいです

372 基本 例題 25組分けの問題 (2) ... 組合せ 9人を次のように分ける方法は何通りあるか。 (1)4人,3人,2人の3組に分ける。 (2)3人ずつ,A, B, Cの3組に分ける。 (3) 3人ずつ3組に分ける。 (4)5人2人、2人の3組に分ける。 0000 [類 東京経 基本21 「9人」は異なるから、区別できる。 指針 組分けの問題では,次の①,②を明確にしておく。 ①分けるものが区別できるかどうか ②分けてできる組が区別できるかどうか ****** 特に,(2)と(3)の違いに注意。 (1) 3組は人数の違いから区別できる。 例えば, 4人の組を A, 3人の組をB, 2人の 組をCとすることと同じ。 (2)組に A,B,Cの名称があるから, 3組は区別できる。 (3)3組は人数が同じで区別できない。 (2) で, A,B,Cの区別をなくす。 →3人ずつに分けた組分けのおのおのに対し,A,B,Cの区別をつけると、果た る3個の順列の数 3! 通りの組分け方ができるから,[(2) の数]÷3! が求める 法の数。 (4)2つの2人の組には区別がないことに注意。 なお, p.364 基本例題21との違いにも注意しよう。 解答 (1)9人から4人を選び, 次に残った5人から3人を選ぶ と、残りの2人は自動的に定まるから, 分け方の総数は 9C4×5C3=126×10=1260 (通り) ei (2)Aに入れる3人を選ぶ方法は 9C3通り Bに入れる3人を, 残りの6人から選ぶ方法は C3通り Cには残りの3人を入れればよい。 したがって, 分け方の総数は C3X6C3=84×20=1680 (通り) 2人,3人,4人の順に (1) んでも結果は同じになる C4X5C3×2C2としても 同じこと。 (2)で,A,B,Cの区別をなくすと, 同じものが3! 通 次ページのズームUP りずつできるから、分け方の総数は (9C3X6C3)÷3!=1680÷6=280 (通り) (4)A(5人),B(2人), C (2人) の組に分ける方法は C5×42通り B,Cの区別をなくすと,同じものが2! 通りずつでき るから,分け方の総数は (9C5X4C2)÷2!=756÷2=378 (通り) 照。 次ページのズーム 例

17行目のin their hanasのtheirは何を指しているのですか？教えて頂きたいです。よろしくお願いいたします。

10 The energies of conquest were not merely more efficient technologies. The European settlers used technological advantages for personal benefit. They viewed the land as a source of commodities as raw material waiting for transformation. 心理学 Although the psychology of the settlers varied considerably, according to class, religion, and nation of origin, most of them shared a set of beliefs that led to APP まめよ植えよ 15 expansionism. They believed in the Biblical *injunction to be fruitful and multiply, fruit GOLF and they believed that they were to use their talents to the maximum to develop the land, which divine providence had placed in their hands. They saw the Native *REV Americans as *heathens who had failed to utilize the New World, which to Europeans seemed a wilderness. The technological differences between Native and European 20 cultures appeared to demonstrate the superiority of the newcomers. Machines 新しくもののが優れていること xoa increasingly would become the measure of man, and the very energies of conquest seemed to justify the victory. RS (3) 1月 farmers

黄色で下線引いてある部分なのですがseemの後にoの名詞を取ることはできるのですか？第一文型か第二文型でしか利用できないと思っていました。教えて頂きたいです。よろしくお願いいたします。

land, which divine providence had placed in their hands. They saw the Native FREV Americans as *heathens who had failed to utilize the New World, which to Europeans orld, which seemed a wilderness. The technological differences between Native and European C 実証する 20 cultures appeared to demonstrate the superiority of the newcomers. The bras (3) Machines increasingly would become the measure of man, and the very energies of conquest seemed to justify the victory. RES 1月

(2)の問題、どうしてheじゃないんですか？ himは 彼を(に) なのに

(1) This cup isn't mine/ I / my }. (2) Bob plays tennis well. I like his / him/he}. (3) Is that { you/your/ yours } house? (4) I want to go with {vou / vour / youre }

この文ってwhenだからbeがついているのでしょうか？　なぜbeが必要なのか教えてください🙇‍♀️

6 Does Ann go to school by train? - Yes, she does. / No, she doesn't. 7 Didn't you visit New York? B <26> - Yes, I did. / No, I didn't. ☑ (26) (28) N 8 Are you going by air() or by train ()? (I'm going) By train. 9 Who painted this picture? - John did. (29) Hoiup (29) 10 What do you want for your birthday? I want a PC. (29) 11 When will you be back? (I'll be back) By five. IZ It is very cold today, isn't it? Yes, it is. N <29> <31> 13 Tom doesn't like math, does he? - Yes, he does. <31> 14 Listen to me carefully. (34) 15 Be careful! The cup is very hot. 04-CAD (34) 16 Don't give up. Try it again. (34) 17 Don't be so noisy, please. <34> 18 Let's play tennis. - Sure. / Sorry, I can't. <35> 19 How big this steak is! <36> 20 What a good swimmer (he is)! (36) □ 2

英検2級 要約問題 添削お願い致します🙇‍♀️ 問題文は著作権の為載せられないので、文法やスペルミス等ないか教えてください🙏コツもあればお願いします✨

* Nowadays, many Tourists prefer to participate a group Tour. It has some benifits, such as getting new best friends and being happy because they don't have to worry like a lone trip. It is a nice 000ortunity. However, there will be many tourists and they can't enjoy trip their pace..

下の英文について、下から２行目のanythingの両端にあるカンマはどのような働きをしているのですか？🙇🏻‍♀️

② “We are behaving in ways [that certainly tell children < S V 0 don't matter> V S C that } they're not interesting to us V that } they S that} they're not as compelling (as anybody, anything, any ping [that may S V C interrupt our time with them])>]," she says. 0 S V V 和訳 「私たちは、子供に対して、 自分は重要ではないのだとか、 自分は面白みがない 人間なのだとか、私たちの時間に割り込んでくる可能性のあるどんな人や物や 機器を操作するときに鳴る音よりも心を引きつけることがないのだ、ということ を確実に伝えるようなやり方で行動しているのです」 と彼女は言う。

問3〜問6まで教えてください。

次に,図2のように,再びAを机面上に置き, BをAから少し離れた机面上の位置に 置いて棒で突いた。この後,Bは速さ”で進み,静止していたAと図3のように瞬間的 に衝突をした。衝突の際,A,Bの間で摩擦力ははたらかないものとする。ここで,衝突 をしたときのA,Bの中心の位置をそれぞれ OA, OB として,衝突直前のBの速度の、 線分 OAOB に平行な方向の成分をCP, 垂直な方向の成分を UN とする。ただし、図3に示 した向きをそれぞれ UP, UNの正の向きとする。 up の正の向き (up, up' の正の向き) m 40 m B 図 2 A UP OB B 図3 UN の 正の向き 問3 衝突の際にAがBから受ける力積の向きを表す矢印として最も適当なものを, 図4 (a)および(b)の1~8のうちから一つ選び、番号で答えよ。 ただし, 1,2はそれ ぞれUN, UP の正の向き, 5は衝突直前までBが速さで進んでいた向きである。 A 2 OB 4 B 5 A OA 8A OB B SA (b) 図 4

この解答であっているのかそしてなぜほかの答えではだめなのか教えて頂きたいです。

Part 5 Daily Life Incomplete Sentences Select the best answer to complete the sentence. Then choose the letter (A), (B), (C), or (D). 1. All participants have to arrive ten minutes before ------- scheduled appointments. (A) they (B) their (C) them (D) themselves 2. At the book reading workshop, authors read books ------- to children. Text Completion Select the best answer to complete the text. Then choose the letter (A), (B), (C), or (D). Questions 9-12 refer to the following notice. Security Notice by Artist Request The use of cellphones, cameras, smart watches or recording devices will not be permitted during tonight's performance. Guests are encouraged to leave these items in their home or vehicle to entry. Failure to comply with this ------ your 11. 9. policy will result in ---- from the venue without a refund. We greatly. 10. (A) fully (B) aloud 3. We are pleased to (A) welcoming (C) noisy (D) over ------- a new exchange student from Canada. (B) welcome (C) welcomed (D) welcomes 4. Use this robot vacuum cleaner after reading the ------- carefully.A.2 (A) systems 5. The order can -------- (A) ships (B) policies anywhere in the world. (B) to ship (C) applications (C) be shipping (D) be shipped 6. Steven began a bakery more than 20 years ------- (A) last (B) ago (C) past cooperation in creating a phone-free viewing experience. ------ 12. Thank you for your understanding. Central Theater directions A 9. (A) once (B) when (C) advance (D) prior (D) before 10. (A) remove 11. (A) anticipate (B) removing (C) removal (D) removed (B) acknowledge (C) acquire (D) appreciate 12. (A (D) automate Further details about this policy can be found on our website. (B) Come celebrate our 25th anniversary this Saturday from 5:00 P.M. (C) For information on group rates and private events, check online. (D) Check for details to see if you qualify for exclusion to this rule. 7. The air conditioner we bought was designed to turn off -------. (A) automatic (B) automatically (C) automated 8. The Momo Store also has small items you can ------- as souvenirs. (A) replace (B) borrow purchase (D) sell

この選択であっているのかそしてなぜほかの答えではダメなのか教えていただきたいです。

Education Text Completion Select the best answer to complete the text. Then choose the letter (A), (B), (C), or (D). Questions 9-12 refer to the following web page. Part 5 Incomplete Sentences Select the best answer to complete the sentence. Then choose the letter (A), (B), (C), or (D). 1. Before ------- Japan, all international students must get a student visa. (A) enter (B) entering (C) to enter (D) have entered ------- in psychology in university, but now he is an artist. 2. He A majored (A) hers (B) studied (B) she 3. Mr. Toda helped Cathy describe 4. It has been 15 years since I graduated (A) on (B) in 5. Library accounts are automatically created, so no ------- LVU Campus Tours The students of Las Vegas University are at the heart of the LVU experience, 9. tour our campus, meet LVU students, and have them guide you on a campus tour. You can enjoy a candid conversation with 10. students, ask them about classes, housing, Las Vegas, online student support, and more. 11. Doing this will hopefully give you the best idea of what LVU life would be like for you. The two-hour campus tour allows you to experience firsthand everything you need to know. Click here for your guided tour. (C) researched (D) took research plan. (C) her (D) herself ------- university. (C) at (D) from registration is 9. (A) so 10. (A) now (B) then (B) modern (C) initials (D) initialed 12. (C) also (C) latest (D) and (D) current necessary. (A) initially (B) initial 6. I'm happy to have this ------- to study with such great professors. (A) notice (B) benefit (C) factor 7. Statistics is a ------- class for second-year students. (A) require (B) required (C) requiring 8. The geologists plan to study the soil from the mountains Dopportunity (D) requires ------- Canberra. 11. A We will match you with a guide based on your interests and goals. (B) Feel free to ask about other universities found in the area. (C) Take the time to learn more about the city of Las Vegas online. (D) Please let us know the kind of person you were in high school. 12. (A) arrange (B) to arrange Carranging (D) arrangement (A) out (B) next (C) onto (D) around