2010-09-15, 01:37 AM
Claim:All horses are the same color
Proof by induction (n=1):
if there is only 1 horse then by definition all horses are all the same color.
Assume it works for case n = k:
As in, any group of k horses are all the same color.
proof for n = k+1:
Take the group of the first k horses, by the assumption those k horses are all the same color. Now take the last k horses... by the assumption all of these horses are the same color. Thus all k+1 horses are the same color.
Since we know it works for k=1, and if case n = k works then case n = k+1 works.
Thus it works for n = 1,2,3,.....
Thus all horses are the same color.
Take that nubs!
Proof by induction (n=1):
if there is only 1 horse then by definition all horses are all the same color.
Assume it works for case n = k:
As in, any group of k horses are all the same color.
proof for n = k+1:
Take the group of the first k horses, by the assumption those k horses are all the same color. Now take the last k horses... by the assumption all of these horses are the same color. Thus all k+1 horses are the same color.
Since we know it works for k=1, and if case n = k works then case n = k+1 works.
Thus it works for n = 1,2,3,.....
Thus all horses are the same color.
Take that nubs!

