all of the n horses are the same color, lets say, blue. now, what i add one horse thats green? or, n+ horses, that are now NOT the same color. Lets also remove one horse...
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0 ups, 2y
this one horse is blue, but since it is removed it is not part of the group. since there are now n horses and not n+ horses, the rule that n horses are the same color applies, and the green horse is now blue