SOLUTION: How many distinct line segments are formed by connecting 20 collinear points.

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Question 1148561: How many distinct line segments are formed by connecting 20 collinear points.
Found 2 solutions by greenestamps, ikleyn:
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


Each distinct line segment is created by choosing 2 of the 20 points. The number of ways to do that is "20 choose 2" = (20*19)/(2*1) = 190.

ANSWER: 190 line segments.


Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

It was solved couple of days ago under this link

https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1148509.html

https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1148509.html