Give four different whole number so that any one of them would be a divisor of the higher neighbor of the product of the three others
Exer 1: There is a division with the quotient is 6 and the remainder is 3. The sum of dividend, divisor and remainder are 195. Find the dividend are divisor.
Exer 2: Prove that: Amoney three consecutive natural numbers, there is one only one the number which divisibles by 3.
Exer 3: Given natural number, n = \(\overline{1ab1}\). Let m be the natural number which is written the opposite respectively of n. Prove that the different of n and m divisibles by 90.
Exer 1:
Trả lời:
The sum of dividend and divisor are:
195 - 3 = 192
Because the quotient is 6.
The divisor is:
(192-3) : (6+1) = 27
The dividend is:
192 - 27 = 165
Exer 2:
Trả lời:
Let three unknow numbers be: n, n + 1, n + 2.
Because n has three forms: 3k, 3k + 1, 3k + 2.
+) If n
Xin lỗi, mình vẫn chưa viết xong, rồi mình viết tiếp đây:
+) If n = 3k then there is only n divisibles by 3.
+) If n = 3k + 1 then there is only n + 2 divisibles by 3.
+) If n = 3k + 2 then there is only n + 1 divisibles by 3.
Thus, amoney three consecutive natural numbers, there is one only one the number which divisibles by 3.
Exer 3:
Trả lời:
When we written the opposite respectively of n, we obtain \(\overline{1ba1}\).
We have:
\(\overline{1ab1}\) + \(\overline{1ba1}\) = (1000 + 100a + 10b + 1) - (1000 + 100b + 10a + 1)
= 90a - 90b
= 90(a - b)\(⋮\) 90
Thus, the difference of n and m which divisibles by 90.
There are n different positive integers, each one not greater than 2020, with the property that the sum of any three of them is divisible by 39. Find the greatest possible value of n?
we have 1234 is a four-digit number that the product of it is 24.how many 4-digit number that the product of it is 24?
google dịch rồi tự làm đi
The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
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Đề của toán tiếng anh mà
The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Answer: ......
106 mình nghĩ là vậy
(a+b+c):3=42=>a+b+c=126
Cho a< nhất, a=20 ( đề cho) => b+c=126-20=106
Vậy số lớn nhất có thể là 106
Gọi 3 số là a,b,c:
(a+b+c)/3=42
đặt a là số bé nhất =>a=20(gỉa thiết)
a+b+c=42.3=126,mà a=20
=>b+c=126-20=106
Vậy tổng 2 số nguyên dương còn lại là 106
When a whole number N is multipled by 7, the last three digits of the product is 173. Find the smallest possible value of N?
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Nếu như bạn thực sự giỏi thì dịch thử đi. Nếu như sau 2 ngày mà tôi chưa thấy bạn trả lời thì tôi sẽ đi rêu rao kap81 nơi về bạn. Nhớ lấy!!!
~Thân~
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I fill in the blank of the following passage with one suitable word.Write your answer on your answer sheet
there is much more water than land.........the surface of the earth .The sea and oceans.........nearly four-fifths of the whole world , and only one-fifths of the whole world and only one fifth of........... land. If you traveled over the earth .........different directions you would have to spend much more of your time............on water than on roads or railways .We sometimes forget that..........every mile of land there is four miles of water
there is much water on the surface of our earth that we .........to use two words to describe. We use the word seas to........ those parts of water surface which........... only a few hundreds of milea wide the word oceans to describe the huge ares of water which are thousands of miles wide..........very deep
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I fill in the blank of the following passage with one suitable word.Write your answer on your answer sheet
there is much more water than land..ON.......the surface of the earth .The sea and oceans.....COVER....nearly four-fifths of the whole world , and only one-fifths of the whole world and only one fifth of....THE....... land. If you traveled over the earth .....IN....different directions you would have to spend much more of your time.......MOVING.....on water than on roads or railways .We sometimes forget that......FOR....every mile of land there is four miles of water
there is much water on the surface of our earth that we ..HAVE.......to use two words to describe. We use the word seas to...DESCRIBE..... those parts of water surface which...IS........ only a few hundreds of milea wide the word oceans to describe the huge ares of water which are thousands of miles wide.....AND.....very deep
Toán tiếng Anh: The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Answer: {}.
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?