SOLUTION: Hi. Here is my question: Given three collinear points A,B,C, four different rays can be named using these points, AB,BA,BC and CB. How many different rays can be named given 5

Question 33572: Hi. Here is my question:
Given three collinear points A,B,C, four different rays can be named using these points, AB,BA,BC and CB. How many different rays can be named given 5 collinear points?
Thanks!
Answer by venugopalramana(3286) (Show Source): You can put this solution on YOUR website!
YOUR QUESTION IS AMBIGUOUS.
IF ABC ARE COLLINEAR..THEY ARE ALL ON SAME LINE.SO THEY ARE ALL ONE RAY.
IF WE DISTINGUISH IN DIRECTION THEN AC AND CA ARE DIFFERENT.
IF WE DISTINGUISH BETWEEN START AND END POINTS ALSO THEN WE SHALL HAVE
AB......BA
AC......CA
BC......CB
THAT IS 6 IN ALL NOT 4 AS YOU HAVE MENTIONED...
SO WHAT EXACTLY YOU WANT?
ON THAT BASIS THE ANSWER WILL DEPEND.

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