What is described below?all the points on a line located between points A and B, including points A and BA. ray ABB. segment ABC. a line that is parallel to line ABD. a line that intersects line AB

So the best I could come up with is paper-rock-scissors; the operation takes two inputs and puts out the winner (assuming they are different).

So (paper rock) scissors= paper scissors = scissors,

But paper (rock scissors)= paper rock = paper.

This is a good example because it shows that associativity matters even outside of math.