Round 294,701 to the thousand digit use cơm (,) to separate each class in number - Ex: 1,234
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choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13
choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13
choose any three digits from 1 to 9 to form a 3 - digit number and each digits is chosen only once. how many of these have the sum of all digit equal to 13
Dịch đề: Chọn bất kỳ ba chữ số từ 1 đến 9 để tạo thành một số gồm 3 chữ số và mỗi chữ số chỉ được chọn một lần. Bao nhiêu trong số này có tổng của tất cả các chữ số bằng 13
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Blacken the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.Thousand of antibiotics________, but only about thirty are in common use today. A. are developing B. have been developed C. have been developing D. have developed Antibiotic (n): thuốc kháng sinh
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Blacken the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
Thousand of antibiotics________, but only about thirty are in common use today.
A. are developing
B. have been developed
C. have been developing
D. have developed Antibiotic (n): thuốc kháng sinh
Đáp án đúng là B. Chúng ta sử dụng thì hiện tại hoàn thành để diễn tả một hành động xảy ra ở một thời điểm không xác định trong quá khứ, thể hiện một quá trình. Thêm vào đó, vì chủ ngữ là danh từ chỉ vật, nên câu này chia ở thể bị động.
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Mary writes down a three-digit number. William copies her number twice in a row to
form a six-digit number. When William’s number is divided by the square of Mary’s
number, the answer is an integer. What is the value of this integer?
A,B,C,D,A+C,B+C,A+D,B+D represent 8 diffirent natural numbers from 1 to 8. If A is the largest number in the number from 1 to 8.Find A
How many natural numbers are there between 100 and 999 that unit-digit and tens-digit equal hundreds-digit ?
An infinite sequence of numbers 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, … follows the
pattern such that starting from the third number, each number is equal to the units
digit of the sum of the two numbers in the sequence immediately preceding it.
What is the 2019th number of the sequence?
đề bài là gì vậy
Một dãy vô hạn các số 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, ... theo sau bài toán sao cho bắt đầu từ số thứ ba, mỗi số bằng hàng đơn vị của tổng của hai số trong dãy liền trước nó. Số thứ 2019 của dãy là bao nhiêu? =)
using each of a digit 3,4,5 and 6 exactly once to form two 2 digit numbers .what is the different between the largest possible product and the smallest possible product of two such number
Hai số lớn nhất là 65; 64
Hai số nhỏ nhất là 34 ; 35
Hiệu là : 65 x 64 - 35 x 34 = 2970
nếu đúng tk cho mk nha
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34; 35; 36; 43; 45; 46; 53; 54; 56; 63; 64; 65.
The largest number is 65.
The smallest number is 34.
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I. Use the correct form of the word given to complete each sentence.1. They were reunited after a __________ of more than 20 years. (separate)2. Everyone was very __________ to me. (friend)3. He plays an __________ part in politics. (act)4. He has been the BBC’s political __________ for many years. (correspond)5. We were most __________ by the beauty of the landscape. (impress)
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I. Use the correct form of the word given to complete each sentence.
1. They were reunited after a __________ of more than 20 years. (separate)
2. Everyone was very __________ to me. (friend)
3. He plays an __________ part in politics. (act)
4. He has been the BBC’s political __________ for many years. (correspond)
5. We were most __________ by the beauty of the landscape. (impress)
1.separation
2.friendly
3.active
4.correspondence
5.impressed
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Refer:
1.separation
2.friendly
3.active
4.correspondence
5.impressed
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1separation
2friendly
3active
4correspondence
5impressed
học tốt
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Combinatorics21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?Different way: Cách khác nhau.22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. H...
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Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.
22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.
23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.
24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.
25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~
là seo pạn?mik hem hỉu??????????????????????
Đọc cái bài mà mún trầm kẻm!
Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.
22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.
23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.
24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.
25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~
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