В классе 3 отличника, 13 хорошистов, 5 «троечников», «двоечников» нет. Отличники всегда отвечают на «5», хорошисты — на «4», а «троечники» могут получить любую оценку. Какое наименьшее количество учеников нужно вызвать к доске, чтобы наверняка был бы хотя бы один ответ на «пятёрку»? А. 19. Б. 18. В. 13. Г. 6.

В классе 3 отличника, 13 хорошистов, 5 «троечников», «двоечников» нет.
Отличники всегда отвечают на «5», хорошисты — на «4», а «троечники» могут
получить любую оценку. Какое наименьшее количество учеников нужно
вызвать к доске, чтобы наверняка был бы хотя бы один ответ на «пятёрку»?
А. 19. Б. 18. В. 13. Г. 6.
- Предмет:
  Математика
- Автор:
  acacioqmis
- 6 лет назад

Ответы 1

В самом плохом случае мы вызовем к доске тех, кто может полуить не 5, а потом отличника: 13+5+1 = 19
A
- Автор:
  dariond4px
- 6 лет назад
- 0
Добавить свой ответ

Еще вопросы

как читается по русски произношение перевод не надо
Last winter, one of the days was great weather and my friends and I decided to go to the rink. I skate well and I love this activity very much. I and my friends Alina and Nastya often go to the rink. I really like the setting there. Plays cheerful music, friendly people, all joyful and contented. At first we rode around a little, then with the other boys we organized two teams and began to play hockey. We spent a lot of time at the rink. Then they all went to McDonal's. Ate tasty and we went for a walk on. We were playing snowballs, rolling downhill. We had a wonderful time together. And then I went home and began to learn lessons. Mom was pleased that I spent the whole day on the air and my cheeks turned pink.
- Предмет:
  Английский язык
- Автор:
  noelia
- 6 лет назад
- Ответов:
  
  1
- Смотреть
Какой буквы не было в русском алфавите?

а)ижица
б)омега
в)сигма
г)кси
- Предмет:
  Русский язык
- Автор:
  chad
- 6 лет назад
- Ответов:
  
  1
- Смотреть
что больше 350сек или 6 минут
- Предмет:
  Математика
- Автор:
  foxy100
- 6 лет назад
- Ответов:
  
  2
- Смотреть
1) Thanks John: It’s about time we made a move. Ruth: Really? Can’t you stay a bit longer? John: I’m afraid not. You see, we promised our baby-sitter we’d be back by twelve at the latest. Ruth: I see. What a pity. Sheila (John’s wife): _____________ Ruth: I’m glad you enjoyed it. You must come again some time. 1. Many thanks. 2. Thank you for a lovely meal. 3. I don’t know how to thank you. 4. How kind of you.
2) Introduction. Mr. Cox: Mr. Steel, I’d like to introduce David Ward, a colleague of mine. (to Mr. Ward) Mr. Steel from, from Bristol University. Mr. Ward: How do you do? Mr. Steel: ____________ 1. How do you do? 2. Fine, thanks. 3. I’m very well. 4. Good morning.
3) Introduction. Bill: Rosemary, this is my brother Stephan. Rosemary: Hallo, Stephan. Stephan: ______________. Having a good time? Rosemary: Yes. It’s the best party I’ve been for ages. 1. How do you do? 2. Nice to meet you. 3. Nice to see you. 4. Hello
4) Greetings. Susan: Hallo, Mary. __________ Mary: A bit hectic at the moment. I’m very busy at work and besides I’ve got my cousin staying with me. Susan: I see. Well, don’t overdo things. Mary: I’ll do my best. 1. How do you do? 2. Nice to meet you. 3. What’s new? 4. How’s life?
5) Saying good-bye. Mr. Adams: I’m afraid I must be going Mr. Brent: Must you really? Mr. Adams: Yes, I’m afraid so. I’ve got some urgent work to do. Mr. Brent: Well, I won’t keep you then Mr. Adams: Good-bye. Mr. Brent: Good-bye. _____________ Mr. Adams: Thank you. I will. 1. Give my love to your wife 2. Good luck. 3. Remember me to your wife 4. All the best
6) Thanks Stranger: Excuse me. You left your handbag on the bench. Brenda: Oh! Thank you so much. Stranger: __________ Brenda: I don’t know how to thank you. It’s got my purse and keys and address book and all sorts of things in it. How careless of me. Thank you very much indeed. Stranger: Not at all. 1. I’m grateful to you. 2. How kind of you. 3. That’s pleasure. 4. Don’t mention it Saying good-bye. John: I say, Barbara, the train starts in five minutes. Barbara: Oh, you must hurry. _________ John: Thank you. Keep well. 1. Good-bye. 2. Give my best regards to your brother 3. I’ll be seeing you. 4. Have a comfortable journey! 7) Greetings. Jan: Tim! I haven’t seen you for ages. Hello! Tim: Yes, it’s been a long time. _________________ Jan: And it’s good to see you again, too. 1. Nice to see you again! 2. How are things going? 3. Everything’s going fine, thanks. 4. How are you?
- Предмет:
  Английский язык
- Автор:
  chadkssp
- 6 лет назад
- Ответов:
  
  1
- Смотреть

Ответы 1

Топ пользователей