\(What\rightarrow do\rightarrow you\rightarrow mean\rightarrow?\)

there are three segments

There are 6 segments: AB, BC, CD, AC, BD, AD.

There are three 

72 đường

ko chắc 

à ko, 36 đường, 100% lun

36 sai

Có 8 đường thẳng đó

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

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.

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

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,... 

It is just 1 point in 99 straight draw with 99 points remaining. So with 100 points, with all 99 . 100

As each line is repeated 2 times so have all :

\(\frac{99.100}{2}=4950\)( lines )

       Answer : 4950 lines