Предмет: Математика, автор: egortrofimov0

Числа от 1 до 15 написаны на 15 шариках. Наугад выбирают один шарик. Какова вероятность, что число, написанное на этом шарике, делится на 4?​

Ответы

Автор ответа: rainy5020
0

Ответ:

количество исходов 15

количество благоприятных исходов -3

(числа 5 10 и 15 делятся на 5)

3:15=0.2

Пошаговое объяснение:

наверное у тебя ошибка) не на 4 а на 5

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A DOG AND THREE DOLLARS by M. Twain
I have always believed that a man must be honest. "Never ask for money you have not earned", I always said.
Now I shall tell you a story which will show you how honest I have always been all my life.
A few days ago at my friend's house I met General Miles. General Miles was a nice man and we became great friends very quickly.
"Did you live in Washington in 1867?" the general asked me.
"Yes, I did," I answered.
"How could it happen that we did not meet then?" said General Miles.
"General", said I. "We could not meet then. You forget that you were already a great general then, and I was a poor young writer whom nobody knew and whose books nobody read. You do not remember me, I thought, but we met once in Washington at that time."
I remember it very well. I was poor then and very often I did not have money even for my bread. I had a friend. He was a poor writer too. We lived together. We did everything together: worked, read books, went for walks together. And when we were hungry, we were both hungry. Once we were in need of three dollars. I don't remember why we needed these three dollars so much, but I remember well that we had to have the money by the evening.
"We must get these three dollars," said my friend. "I shall try to get the money, but you must also try."
I went out of the house, but I did not know where to go and how to get the three dollars. For an hour I was walking along the streets of Washington and was very tired. At last I came to a big hotel. "I shall go in and have a rest," I thought.
I went into the hall of the hotel and sat down on a sofa. I was sitting there when a beautiful small dog ran into the hall. It was looking for somebody. The dog was nice and I had nothing to do, so I called it and began to play with it.
I was playing with the dog, when a man came into the hall. He wore a beautiful uniform and I knew at once that he was General Miles. I knew him by his pictures in the newspapers. "What a beautiful dog!" said he. "Is it your dog?"
I did not have time to answer him when he said, "Do you want to sell it?"
"Three dollars", I answered at once.
"Three dollars?" he asked. "But that is very little. I can give you fifty dollars for it."
"No, no. I only want three dollars."
"Well, it is your dog. If you want three dollars for it, I shall be glad to buy your dog."
General Miles paid me three dollars, took the dog and went up to his room.
Ten minutes later an old man came into the hall. He looked round the hall. I could see that he was looking for something.
"Are you looking for a dog, sir?" I asked.
"Oh, yes! Have you seen it?" said the man.
"Your dog was here a few minutes ago and I saw how it went away with a man," I said. "If you want, I shall try to find it for you."
The man was very happy and asked me to help him.
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"Three dollars?" said the man. "But it is a very good dog. I shall pay you ten dollars if you find it for me."
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"Give me back my three dollars and take the dog," he shouted. When I brought the dog back to its master, he was very happy and paid me three dollars with joy. I was happy too because I had the money, and I felt I earned it.
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60. Why was the author’s childhood very hard?
61. Why did the boy find himself in the hotel one day?
62. Who ran into the hall suddenly? It was a funny little dog, was not it?
63. Why did the boy sell the dog to General Miles for three dollars?
64. What happened ten minutes later?
65. What brilliant idea came to the boy's mind?
66. How did he manage to take the dog back?
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