Question

[Mai Ha vy]

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?
 

Answer 1

[Sáng]

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

Answer 2

[Le Thi Khanh Huyen]

The number of lines is :

\(\frac{100.99}{2}=4950\)

So,...