Given that 4 points A, B, C, D are on the same line. How many segments are there?
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nên hỏi câu này ở hỏi đáp tiếng anh nhé, nhỡ có ai đó vừa biết toán vừa biết tiếng anh thì sao. họ sẽ giải giúp nhé!
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Mình nghĩ là tính tổng các số từ 1 đến 2014 đó
2014 - 1 = 2013
2013 + 1 = 2014
2014 : 2 = 1007
1007 x (2014 + 1) = 2029105
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Given 100 points with any 3 points non-aligned. Draw all the line passing through any 2 of these points. How many lines are there?
This is my exercise:
It is just 1 point in 99 straight draw with 100 points remaining. So with 100 points, with all 99.100
As each line is repeated 2 times so have all :
99.100 / 2 = 4950 (lines)
Answer: 4950 lines.
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Given 100 points with any 3 points non-aligned. Draw all the line passing through any 2 of these points. How many lines are there?
With 100 points, then we draw are:
100 x 99 : 2 = 4950 ( lines )
Answer: 4950 lines
![](https://rs.olm.vn/images/avt/0.png?1311)
Đề bài:
Given 100 points with any 3 points non-aligned. Draw all the line passing through any 2 of these points. How many lines are there?
With 100 points, then we draw are:
100 x 99 : 2 = 4950 ( lines )
Answer: 4950 lines
The number of lines is :
\(\frac{100.99}{2}=4950\)
So,...
\(What\rightarrow do\rightarrow you\rightarrow mean\rightarrow?\)