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Знайти число( кількість) усіх власних підмножин множини А
А{3,12,23}-
Предмет:
Математика -
Автор:
lexus - 6 лет назад
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Ответы 1
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Власни пидмножини - це уси пидмножини, видминни вид нульовойи та самойи множини, тобто уси, крим найбильшойи та найменшойи пидмножин.{3};{12};{23};{3;12};{12;23};{3;23}.Видповидь: Множина А маэ 6 власних пидмножин.
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Автор:
montanakline - 6 лет назад
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Сделайте пожалуйста перевод текста.
James: Hi, Kate!
Kate: James? What are you doing here?
James: I’m here for the same reason as you are I guess - I want to see the football match. My favourite team is playing.
Kate: Oh, yes, ...It just ...sounded silly. I know how keen on football you are. You’ve been playing for our school team since the second grade I guess.
James: Since the fourth. You started swimming then.
Kate: Yes, I remember. At first I joined our athletics club but I didn’t like it and I gave it up. But swimming is great for me.
James: Right. You are lucky we have the swimming pool just in front of our school.
Kate: Yeah, I often go there early in the morning, just before lessons.
James: Where’s your seat by the way?
Kate: Over there, in sector B. It was my friend actually who suggested coming here. She bought the tickets and talked me into it. She said that we’ve never watched football live and that’s not right.
James: Absolutely. You should introduce me to your friend. We seem to have lots in common. Is she from our school?
Kate: No, she’s my neighbour. She lives next door to me. Come on, she must be already there.
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Kate: How about the essay due on Monday? Have you already completed it?
James: No. But that’s not a good reason to miss a good film. I love science fiction and my favourite actors are in it. Fancy coming with us?
Kate: No, I don’t want to risk failing the essay. High grades are very important for me now.
James: Because you are going to university?
Kate: Yes. I have already chosen what I want to do. I want to be a teacher of science.
James: I thought you loved poetry and fine arts.
Kate: That’s right but I don’t see design or literature as a career. It’s a hobby, a quality pastime.
James: I see.
Kate: Science is something more serious. And I’m really good with children. I know how to get them interested and involved.
James: You have a younger sister, don’t you?
Kate: A sister and a brother. They are twins and they are only three. Very cute.
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Kate: No, thanks. Neither popcorn nor chips. I like neither of them. I’ve just got a bar of chocolate.
James: Chocolate fits any occasion.
Kate: Do you mean if our team loses, it’ll make it a bit sweeter, and if it wins, the victory will taste even better?
James: Exactly.
I want to see the football match. My favourite team is playing.
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