How many lines can you draw using 3 non collinear (not in a single line) points A, B and C on a plane? Choose the correct choice from the following.
A) 03  B) 4  C) 5  D) 1  E) 7
You need two points to draw a line. The order is not important. Line AB is the same as line BA. The problem is to select 2 points out of 3 to draw different lines. If we proceed as we did with permutations, we get the following pairs of points to draw lines.   AB , AC   BA , BC   CA , CB   There is a problem: line AB is the same as line BA, same for lines AC and CA and BC and CB.   The lines are: AB, BC and AC ; 3 lines only.   So in fact we can draw 3 lines and not 6 and that's because in this problem the order of the points A, B and C is not important.   03nswer:03
<result>A</result>
How many lines can you draw using 3 non collinear (not in a single line) points A, B and C on a plane?