確率 塾技解説…のマーカーで引いた部分の4はどこから出てきたのか教えてください

塾技 33 場合の数・確率 ② 順列 異なるn個のものから、 異なるr個を選んで並べる並べ方を順列 (permutation)といい „Pで表す。 „P,=nx(n-1)x(n-2)x...×(n-r+1) 個の積 組み合わせ 異なるn個のものから、 異なるr個を選ぶ選び方を組み合わせ (combination)といい n C で表す。 塾技 解説 „C₁ = P² Pr nx(n-1)x(n-2)x...x(n-r+1) rx(r-1)x...×2×1 = 場合の数・確率の問題には ① 選んで並べる問題(順列の問題という), ②選ぶだけで, 並べる順序は関係ない問題 (組み合わせの問題という)の2つのパターンがある けた ①の例 ① 1 2 3 4 5 の5枚のカードから3枚選んで3桁の整数を作る。 何通りの整数が作れますか。 この例は,3枚選んで、順に百の位・十の位一の位と並べるので順列!よって, P3=5×4×3=60 (通り) GALER ②の例 A,B,C,D,E の5人から3人を選んでグループを作る。 何通りのグループが作れますか。 この例は,5人から3人選ぶだけなので組み合わせ よって, 12 = =10 (通り) 3×2×1 5P3 (5人から3人を選んで順に並べる並べ方)5×4×3 5Cg= 3P3 (選んだ3人の並べ方) 3P 3 で割る理由は,重複があるから。 例えば A,B,Cの3人を選んで並べる並べ方は, (A,B,C), (A, C, B), (B, A, C), (B,C, A), (C, A, B), (C, B, A) の6通り あるけど, グループとして考えたらどれも同じ3人だよね。 だから、 異なる3人を並べ る並べ方 (3P3) で割るというわけなんだ。 入試 問題1 るか 「解」 両端 男

5番の解説お願いします できるだけ早くお願いします

(4) √50-2n 3 ☆の値を求めなさい。 50-20-40² 550-2n_10-20 for √9 が自然数となるとき, 自然数 千葉) 7=7 (5) 一の位が0でない2けたの自然数Pが あり,Pの十の位の数と一の位の数を入れ かえた数をQとする。 P-Q=45であり, VP+Q が自然数となるとき,Pの値を求 めなさい。P=Math (熊本) Eatb当卒良い!P=Ha+b Q=10b + u 5-6) 94-9b=45 Mutllb 9(/a-b) = 45 √1₁/(a + b) a-b = 5 a/b = 1/8e ↓ ath=-11 83 Ex1²5-11 2x=16 2-8

この文で、3行目の-the rationale being thatの部分で、isではなくbeingなのはなぜですか？ 独立分詞構文だからでしょうか？

Title: - Date: The commision ruled that in Norway, some employees could coune their commute as working time the razionale being that while they way not be, sericely speaking, working, they are at the disposal. of their employer

1番上の（）には、cultures もしくはculture どちらが入りますか？

B Complete the following table using the words in the box. Change the form of the words if necessary. Paragraph 12 13 4 5 6 7 8 Summary けれども Though romantic love is universal, its expression varies according to (1. Cultures). Fale 83 Some psychiatrists argue that our romantic love is rooted in (2. child hood ) experiences. 9 主張する ~と関係がある Some psychologists argue that our choice of partners has to do with our instinct to have (3. healthy children. Professor Marazzitti argues that the (4. Chemical) condition in our brain and body influences romantic love. Helen Fisher argues that (5.dopamine ) promotes passion and (6.0xytocin) promotes mutual feelings of connection and bonding. We have seen several theories trying to explain love. However, is it possible to explain love completely with (7. Scientific) theories? 化学の 子ども時代 文化 科学の 危険そうな オキシトシン WHEEN ENESTE TION chemical childhood culture dopamine healthy oxytocin scientific

綺麗な日本語に直せません。 日本語訳してほしいです💦

NI] (大中) 6 I suggested ( ) start early. 1 her to 3 that she **** d 2 to her to for her to *** (****) (名城大) 7 The customer demanded that the meat (i) in his presence. ogollos of og bowo be cut 2 could be cut sisH @ 3 cut 4 might be cut 8 I always have my daughter ( 1 drive 2 drove ) me home from work. 3 driven 9 Mr. Smith found he had had his wallet ( theater. 1 steal 4 stole 2 stealing 5 stolen (明治学院大) 3 to steal (札幌大) ) on his way back from the (大東文化大)

英語が苦手で解けません。 解答解説お願いします💦

NI] (大中) 6 I suggested ( ) start early. 1 her to 3 that she **** d 2 to her to for her to *** (****) (名城大) 7 The customer demanded that the meat (i) in his presence. ogollos of og bowo be cut 2 could be cut sisH @ 3 cut 4 might be cut 8 I always have my daughter ( 1 drive 2 drove ) me home from work. 3 driven 9 Mr. Smith found he had had his wallet ( theater. 1 steal 4 stole 2 stealing 5 stolen (明治学院大) 3 to steal (札幌大) ) on his way back from the (大東文化大)

至急です‼️英文が合ってるか確認していただくだけで大丈夫です。長くてすいません。 ①One problem in the Tokyo metropolitan area is unopened railroad crossings. 首都圏で問題になっているのが開かずの踏切... 続きを読む

至急です‼️英文が合ってるか確認していただくだけで大丈夫です。長くてすいません。 ①One problem in the Tokyo metropolitan area is unopened railroad crossings. 首都圏で問題になっているのが開かずの踏切... 続きを読む

中2 英語 1枚目の(2)の私の答えは〇になりますか？ ※解答例は2~3枚目にのせてます

] 1 英作文 次のようなとき, 英語で何と言うか書きなさい。 .Write・ 友達に, あなたにこれらのクッキーをあげますと言うとき。 I'll give you you these cookies. e) アメリカ出身の友達に,この野菜を英語で何と呼ぶかと聞くとき。 Hon can I LOEBE.. call this vegetable in English?

空欄にはbが入るのですが、その理由を教えていただけませんか？

次の英文を読み, 後の問いに答えよ。 oh ni ai tuned" goizer o d Beauty is in the eye of the beholder. 1 This proverb was first recorded in the English language in its current form in the 19th century. However, (1). the concept of people viewing beauty differently from their own points of view has been around in most cultures of the world since ancient times. But what exactly is beauty, and is it really subjective? The definition in the Merriam-Webster dictionary is "the qualities in a person or a thing that give pleasure to the senses or the mind." This definition, however, does not mention whether there is a universal standard for beauty, or whether each individual person views beauty based on a totally different set of standards. Some of the arts seem to suggest the (2) if we consider the fact that everybody has their own favorite piece of music or painting that they consider to be beautiful. Nature, on the other hand, consistently comes up with scenes that are universally considered to be beautiful. There is little doubt that physical beauty, or beauty based on physical appearance of people, is personal. The ideal "beautiful woman" differs between cultures, and in many cases is based on fashion. Some cultures appreciate fatness, while others believe that body mutilation 2 represents beau example, body art in the form of piercings and tattoos is recognized as a sign of beauty in many countries of the world today, although there are also many people in these same countries who continue to ( 4 ) with this assessment. (3). For hana including Pythagoras believed that beauty was based on 1:1 11