Grade

Type of questions

English Senior High

it’s an essential skill, something you need for everyday activities, whether that’s finding out the news by reading a newspaper or buying... Read More

Phil Hello. This is 6 Minute English from BBC Learning English. I'm Phil. Beth And I'm Beth. Are you a big reader, Phil? Phil Sure, I enjoy reading - and it's also a great way to pass the time on my daily commute to work. But reading isn't just a nice thing to do - it's an essential skill, something you need for everyday activities, whether that's finding out the news by reading a newspaper or buying groceries by reading the labels. Beth And that's why I was shocked by a recent UN report estimating that around the world over 700 million adults are illiterate, which means they can't read or write. Phil Wow! That's a huge number of people excluded from doing basic day-to-day things. So, what can be done to get more adults reading and writing? In this programme, we'll be hearing about projects in two very different countries trying to do just that. And, as usual, we'll be learning some useful new vocabulary as well. Beth But first I have a question for you, Phil. I mentioned a recent UN report on the high numbers of people unable to read and write, but illiteracy is not a new problem. Since 1967, the UN has been highlighting the importance of literacy, being able to read and write, with a day of celebration called International Literacy Day. But when does it take place? Is it: a) the 8th of March? b) the 8th of June? or, c) the 8th of September? Phil I think International Literacy Day is on the 8th of September. Beth OK, Phil, we'll find out if that's correct at the end of the programme. The biggest reason people grow up illiterate is not going to school, and that's especially true for people living in the coastal towns of Bangladesh. Because these towns flood regularly, families are always on the move, making it hard for children to get an education. Phil The Friendship Project teaches reading and writing to groups of Bangladeshi women and girls. They also teach numeracy which means the ability to do basic maths like counting and adding up. Here one student, Rashida, explains the impact it's had on her to BBC World Service programme, People Fixing The World: Rashida My parents never sent me to school and I've suffered from not being able to read and write. My children were embarrassed that I was illiterate. I couldn't even do basic accounting. Until now, I've had to use my fingerprint as a signature as I was illiterate, but now I can sign my name because I can read and write thealphabet, and I'll also be able to keep an account of my expenses. No one can cheat me anymore. Beth Before the Friendship Project, Rashida couldn't write her signature - her name written in her own handwriting. Instead, she had to use her fingerprint. Now, Rashida has learned the alphabet and also some basic maths, so she knows how much money she's spent, and how much she has left. This means no-one can cheat her, can trick or swindle her into taking her money.

Solved Answers: 1
Mathematics Senior High

赤線部について質問です。 なぜ重複を許して5個を選ぶときこのような考え方になるのか分かりません💦重複組み合わせと同じ考え方ですか?なぜ同じ考え方になるのかも教えて欲しいです🙇🏻‍♀️

Think 例題186 一定の順序を含む順列(2) 5桁の整数 N =α × 10' + 6×10°+c×102+d×10+e **** 次の条件を満たすものは何通りあるか。(各位の数は0以上9以下の軽 数, α≠0 とする.) (1)a>b>c>d>e (3) a<b<c, c>d>e 考え方 与えられた条件から, 解答 (2) a≥b≥c≥dze 「0から9の10個の数から5個を選んで5桁の整数をつくる」 という問題であることがわかる. 10個の数から5個を選んで並べるのであれば, 順列の考えを用いればよいが、 ここで は、選んだ後は条件を満たすように並べるので,並べ方は1通りに決まる。 つまり 個の数字を選ぶことを考えればよい. (1)86542 のように各位の数が徐々に小さくなる場合である. (2)なので,重複を許して(たとえば, 8, 6, 64, 2などでもよい) 選べばよい。 (3)まずは,一番大きい数が入るCを考える。 (1)0, 1, 2, 3, … 9の10個の数から異なる5個を選ん で,大きい順に a, b, c, d, e とすればよい. このとき, α≠0 は成り立つ. 10.9.8.7.6 5・4・3・2・1 =252 (通り) よって, 10C5= (2) 0, 1, 2, 3, 9 の 10 個から重複を許して5個を選 んで大きい順にa, b, c, d e とすればよい. ただし, このうち 0, 0, 000のみ a=0 となり不適である。 よって, 14C5-1=2002-1=2001 (通り) (3) a≧1より,c≧3 である. c=3 のとき,e,dは0, 1, 2から2つ選んで小さい 順にe, dとし, baは1,2から2つ選んで, 小さい 順に a, b とすればよいので, 3C2 ×2C2 (通り) c=4,5,6,7,8,9のときも同様にすればよい. よって, 3C2 2C2+4C2*3C2+5C24C2+6C25C2+7C2・6C2 αは他の位の数より 大きいので となる. 5個の○と9個の1 の並べ方より, 145 通り α = 0 となるのは、 すべての位の数が となる場合である。 a=0 h, a≥1 a≠0のため,a, b はdeより選べる 数が1つ少ない. +8C2・7C2+9C2・8C2 =3・1+6・3+10・6+15・10 + 21・15+28・21+361?1 =2142(通り)

Solved Answers: 1