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
K
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AC
23 tháng 2 2017
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
AC
23 tháng 2 2017
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.
12 tháng 2 2017
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
16 tháng 12 2016
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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~
PT
28 tháng 12 2016
Đây là Toán Tiếng Anh thôi chứ có sai gì đâu mà bạn ghi luật lệ của Online Math !
Thủy Mai Thị à ! Mk ủng hộ bạn !
17 tháng 1 2018
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17 tháng 1 2018
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