Nineteen children, aged 1 to 19 respectively, are standing in a circle. Thế diference between the ages ò each pải ò adjacent children is recorded. What is the maximum value of the sum of these 19 positive interger
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Each of the integers from 1 to 16 inclusive is put in a different square of a 4 by 4 table. For any two squares sharing a common side, the sum of the numbers in them is recorded. What is the maximum value of the smallest one among the recorded numbers?
there are four kids .if we compute the total ages of three of them the sums are 22,20,17,25 respectively. what is the difference in age between the oldest and the youngest among these four kids?
Có lẽ là 17.
Lý do :
Thấy : \(22=2.11\) \(\notin P\)
\(20=2^2.5\notin P\)
\(17\in P\)
\(25=5^2\notin P\)
Do đó ....
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The sum of age of 4 kids is :
\(\frac{22+20+17+25}{3}=\frac{84}{3}=28\)
So, the ages of 4 kids are \(6;8;11;3\)
Mình không rõ yêu cầu của đề lắm :) Mình chỉ có thể tìm tuổi mỗi người.
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there are four kids .if we compute the total ages of three of them the sums are 22,20,17,25 respectively. what is the difference in age between the oldest and the youngest among these four kids?
What is the next number in the pattern: 1, 8, 27, ...?
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The sum of the ages of three boys is equal to the sum of the ages of three girls, and the product of the boys’ ages is equal to the product of the girls’ ages, too. All six children are of different ages, and all are under 20. Suppose that their ages are integers, and the age of the second oldest boy is 14, what is the age of the second oldest girl?
there are four kids.If we compute the total ages of three of them at a time, the sums are 22,20,17,25 respectively. What is the difference in age between the oldest and the youngest among is four kids.
Giúp mình nhé <3
. Câu hỏi :
Hỏi đứa trẻ lớn nhất hơn đứa trẻ nhỏ nhất bao nhiêu tuổi .
25 - 17 = 8 ( tuổi )
đ/s : 8 tuổi
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What is the sum ò all multiples of 6 each of wich has exactly 10 positive divisora
Tổng các bội số của 6 mỗi trong số đó có đúng 10 ước dương là gì?
Đề bài là thế đúng không
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Ta biết rằng: 10 = 2 x 5 chỉ có đúng 2 thừa số (*)
Các bội của 6 có thể viết dưới dạng: 2x * 3y * A
Số có đúng 10 ước dương thì A phải bằng 1 vì nếu ngược lại A phải viết được ít nhất dưới dạng 1 số nguyên tố có lũy thừa z lớn hơn hoặc bằng 1. Khi đó số ước dương là: (x+1)(y+1)(z+1) ... có ít nhất 3 thừa số, trái với (*)
Vậy các bội của 6 có đúng 10 ước dương là: 2*34 và 24*3
S = 2*34 + 24*3 = 210
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Use a Relative pronoun preceded by a preposition to combine each pair of sentences below.
1. The teacher is Mr Pike. We studied with him last year.
2. The problem has been discussed in class. We are very interested in it.
3. Many diseases are no longer dangerous. People died of them years ago.
4. Do you see my pen? I have just written the lesson with it.
5. I like standing at the window. I can see the park from this window.
6. We are crossing the meadow. We flew kites over it in our childh...
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Use a Relative pronoun preceded by a preposition to combine each pair of sentences below.
1. The teacher is Mr Pike. We studied with him last year.
2. The problem has been discussed in class. We are very interested in it.
3. Many diseases are no longer dangerous. People died of them years ago.
4. Do you see my pen? I have just written the lesson with it.
5. I like standing at the window. I can see the park from this window.
6. We are crossing the meadow. We flew kites over it in our childhood.
7. They are repairing the tubes. Water is brought into our house through the tubes.
8. In the middle of the village there is a well. The villagers take water from this well to drink.
9. The middle-aged man is the director. My father is talking to him.
10. This is a race opportunity. You should take advantage of it to get a better job.
11. The boy is my cousin. You made fun of him.
12. This matter is of great importance. You should pay attention to it.
13. The woman lives next door to me. You gave place to her on the bus.
14. This snake is venomless. You are afraid of it.
15. The examination lasted two days. I was successful in this examination.
16. These children are orphans. She is taking care of these children.
17. The two young men safe not good persons. You are acquainted with them.
18. This is a result of our work. I'm pleased with it.
19. There is a "No Parking" sign. I do not take notice of it.
20. Mr Brown is the man. I'm responsible to him for my work.
Use a Relative pronoun preceded by a preposition to combine each pair of sentences below.
1. The teacher is Mr Pike. We studied with him last year.
=> The teacher who we studied with last year is Mr Pike
2. The problem has been discussed in class. We are very interested in it.
=> The problem which we are ver interested in has been discussed in class
3. Many diseases are no longer dangerous. People died of them years ago.
=> Many diseases, which people died of them years ago, are no longer dangerous
4. Do you see my pen? I have just written the lesson with it.
=> Do you see my pen which i have just writeen the lesson with?
5. I like standing at the window. I can see the park from this window.
=> I like standing at the window where I can see the park
6. We are crossing the meadow. We flew kites over it in our childhood.
=> We are crossing the meadow where we flew kites in our childhood
7. They are repairing the tubes. Water is brought into our house through the tubes.
=> They are repairing the tubes where water is brought into our house
8. In the middle of the village there is a well. The villagers take water from this well to drink.
=> In the middle of the village there is a well where the villagers take water to drink
9. The middle-aged man is the director. My father is talking to him.
=> The middle-aged man whom my father is talking to is the director
10. This is a race opportunity. You should take advantage of it to get a better job.
=> This is a race oppotunity which you should take advantage of to get a better job
11. The boy is my cousin. You made fun of him.
=> The boy who you made fun of is my cousin
12. This matter is of great importance. You should pay attention to it.
=> This matter, which you should pay attention to, is of great importance
13. The woman lives next door to me. You gave place to her on the bus.
=> The woman who you gave place to on the bus lives next door to me
14. This snake is venomless. You are afraid of it.
=> This snake, which you are afraid of, is venomless
15. The examination lasted two days. I was successful in this examination.
=> The examination which I was successful in lasted two days
16. These children are orphans. She is taking care of these children.
=> These children, who she is taking care of, are orphans
17. The two young men safe not good persons. You are acquainted with them.
=> The two young men whom you are acquainted with safe not good person
18. This is a result of our work. I'm pleased with it.
=> This is a result of our work, which I'm please with
19. There is a "No Parking" sign. I do not take notice of it.
=> There is a " No parking" sign which I do not notice of
20. Mr Brown is the man. I'm responsible to him for my work.
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20: Mr Brown is the man who I'm responsible to for my work
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50 In the exploration of the linguistic life cycle, it is apparent that it is much more difficult to learn a second language in adulthood than a first language in childhood. Most adults never completely master foreign language, especially in phonology - hence the ubiquitous foreign accent. Their development often fossilizes into permanent error...
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50
In the exploration of the linguistic life cycle, it is apparent that it is much more difficult to learn a second language in adulthood than a first language in childhood. Most adults never completely master foreign language, especially in phonology - hence the ubiquitous foreign accent. Their development often "fossilizes" into permanent error patterns that no teaching or correction can do. Of course, there are great individual differences, which depend on effort, attitudes, amount of exposure, quality of teaching and plain talent, but there seems to be a cap for the best adults in the best circumstances.
Many explanations have been advanced for children's superiority: they exploit Motherless (the simplified, repetitive conversation between parents and children), make errors oneself- consciously, are more motivated to communicate, like to conform, are not set in their ways, and have no first language to interfere. But some of these accounts are unlikely, based on what is known about how language acquisition works. Recent evidence is calling these social and motivation explanations into doubt. Holding every other factor constant, a key factor stands out: sheer age.
Systematic evidence comes from the psychologist Elisa Newport and her colleagues. They tested Korean and Chinese-born students at the University of Illinois who had spent at least ten years in the United States. The immigrants were given a list of 276 simple English sentences, half of them containing some grammatical errors. The immigrants who came to the United States between the ages of 3 and 7 performed identically to American bom students. Those who arrived between the ages of 8 and 15 did worse the later they arrived, and those who arrived between 17 and 39 did the worst of all, and showed huge variability unrelated to their age of arrival.
According to the second paragraph, children learn languages better than adults because of the following reasons EXCEPT.................
A. They repeat after their parents
B. They have had no languages
C. They don't love talking
D. They don't have a fixed method
Đáp án C
Giải thích: Theo như đoạn văn thứ hai, trẻ con học ngôn ngữ nhanh hơn người lớn vì những lí do sau NGOẠI TRỪ _____________.
A. Chúng nói theo bố mẹ
B. Chúng không có ngôn ngữ
C. Chúng không thích nói
D. Chúng không có một phương pháp cố định
“Many explanations have been advanced for children's superiority: they exploit Motherless (the simplified, repetitive conversation between parents and children), make errors oneself-consciously, are more motivated to communicate, like to conform, are not set in their ways, and have no first language to interfere.” But some of these accounts are unlikely, based on what is known about how language acquisition works.
Dich: Nhiều lời giải thích đã được đưa ra về khả năng vượt trội trong việc học ngôn ngữ của trẻ: chúng khai thác tiếng mẹ đẻ (qua những cuộc đối thoại đơn giản, lặp đi lặp lại giữa bố mẹ và con cái), mắc lỗi một cách vô thức, được khích lệ giao tiếp, muốn bắt chước, không bị gò bó theo cách của chúng, và không bị cản trở bởi ngôn ngữ đầu tiên. Nhưng một vài lời giải thích này có vẻ như không dựa trên cái mà mọi người biết về cách mà lĩnh hội một ngôn ngữ
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The sum of the ages of three children is 30. The oldest child is twice as old as the second oldest one. The youngest child is 10 years younger than the oldest one. Find the ages of each child.
Gọi số tuổi của 3 người lần lượt là a,b,c
Ta có: a=2b=c+10
=> b=1/2 a; c=a-10
Do đó : a+b+c=30
hay a+1/2a+a-10=30
=> a+1/2a+a=40
5/2a=40
Nên a= 16
Từ đó ta suy ra b=8 ;c=6
Vậy số tuổi của ba bạn lần lượt là 16;8 và 6
Chúc bạn làm bài tốt :)
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Call three chirle is a,b,c
I have: a= 2b = c+10
=> b =\(\frac{1}{2}\) a+a=10+30
=>a+\(\frac{1}{2}a+a-10=30\)
\(=>\frac{5}{2}a=40\)
*that you have to:a=16
And three chirlen are: b= 8 c=6
a=16
That well~ :>
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