There are 9 different balls in a bag. Find the number of way(s) to pick 5 balls from the bag and arranged them in a row. (Different orders are considered different ways)
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A bag contains indentical balls of different colours.There are 12 red, 10 white, 8 yellow, 3 blue and 2 black balls.Without looking into the bag,John takes out the balls one by one.What is the least number of balls that John must take out from the bag in order to have at least 4 balls of the same colour?
Khi John lấy 5 quả bóng, kết quả có thể là 3 xanh và 2 đen. Chưa được 4 quả cùng màu.
Trong 3 loại đỏ, trắng, vàng còn lại, John phải lấy thêm ít nhất 10 quả nữa để chắc chắn có 4 quả cùng màu vì: 10 chia 3 bằng 3 dư 1. 4 quả ấy bao gồm 3 quả là Thương cộng 1 quả là Dư.
Vậy John phải lấy ít nhất 15 quả bóng để chắc chắn có 4 quả cùng màu.
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A bag contains a total of 15 balls of 5 different colours .Each colours has a unique number of balls in the bag.What is the least number of ball to be picked (without looking) to ensure 3 different coloured ball are picked
The number of balls to get off to a 3 color is:
3 + 3 + 1 = 7 (balls)
Answer: 7 balls
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There are some balls in a bag. The remainder is 1 when groups of 3 balls are removed. The remainder is 2 when groups of 5 or 7 balls are removed. What is the smallest possible number of balls in the bag?
Có một số quả bóng trong túi. Phần còn lại là 1 khi nhóm 3 quả bóng được lấy ra. Phần còn lại là 2 khi các nhóm 5 hoặc 7 quả bóng bị loại bỏ. Số lượng quả bóng nhỏ nhất có thể có trong túi là bao nhiêu?
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There are 9 yellow balls, 5 blue balls and 4 red balls in a bag. Tim will be blindfolded before she takes the balls out, one at the time. How many balls must Tim take out in order to get 5 balls of the same color?
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cho hỏi câu này với ạ:
there are 5 blues, 4 orange ball and 2 yellow balls in a bag. S will be blindfolded before she take the balls out, one at a time
how many balls must S take out in order to get 4 balls of the same colour?
( note that has to begin with 1 bule, 1 orange and 1 yellow ball )
cảm ơn các men
7 tháng 11 2021 lúc 16:27
There are 8 blue balls, 8 red balls and 6 green balls in a bag. At least how many balls should be drawn at random to ensure there are red balls?
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35. should try different ways / so as to find out / of learning words / Language learners / the best way for themselves.
→ Language learners ……………………………………………………………………………………
36. plant trees /in the school garden /and water them /We are going to /and flowers/ after class.
→ We are going to ………………………………………………………………………………………
35. should try different ways / so as to find out / of learning words / Language learners / the best way for themselves.
→ Language learners ……………………………… should trying different ways of learning words so as to find out the best way for themselves……………………………………………………
36. plant trees /in the school garden /and water them /We are going to /and flowers/ after class.
→ We are going to ………………………………………… plant trees and flowers in the school garden and water them every afternoon after class.……………………………………………
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XIII.Read the following selection carefully, then say whether the statements are true (T) or
false (F) (Hãy đọc kĩ đoạn văn sau, sau đó cho biết những câu phát biểu sau là đúng hay
sai):
MY MOST INTERESTING EXPENRIENCE
I had a strange experience yesterday evening while returning home from school. I was attacted
by a big crowd and when I reached it, I found that there was a magician who was giving some
wonderful persformances.
When I went up there, I saw him taking off his hat elegantly an...
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XIII.Read the following selection carefully, then say whether the statements are true (T) or
false (F) (Hãy đọc kĩ đoạn văn sau, sau đó cho biết những câu phát biểu sau là đúng hay
sai):
MY MOST INTERESTING EXPENRIENCE
I had a strange experience yesterday evening while returning home from school. I was attacted
by a big crowd and when I reached it, I found that there was a magician who was giving some
wonderful persformances.
When I went up there, I saw him taking off his hat elegantly and showing the lining inside to the
audience to prove that there was nothing inside. He took back the hat and put it again on his head.
A minute later, he took it off and strange to say, a rabbit jumped out. The crowd cheered a lot and
put coins into the hat. He next took out of a bag three small rubber balls, threw them up in the air
and caught them up in his hands. He showed his hands and the rubber ball to the crowd. But to
our surprise when he next threw the balls in the air, the tree balls became five balls and soon there
were seven of them.
It was indeed a marvelous experience for me.
1.The writer (She) had a strange experience this morning.
2.She saw a magician surrounded by a big crowd of pople.
3. The mangician performed the show wit a hat and balls.
4. Lookers-on gave him money after the show.
5. Suddenly, a rabbit ran into the crowd.
6. After the magician’s show the balls became rabbits
1.The writer (She) had a strange experience this morning. F
2.She saw a magician surrounded by a big crowd of pople. T
3. The mangician performed the show wit a hat and balls. T
4. Lookers-on gave him money after the show. F
5. Suddenly, a rabbit ran into the crowd. F
6. After the magician’s show the balls became rabbits F
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An had 60 marbles. An wanted to put them in bags so that there are equal numbers of marbles in each bag. How many ways can An equally put the 60 marbles in bags? (Including the case putting in one bag)
Answer: There are ..... ways.