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by stop@800 » Sat Sep 20, 2008 9:25 am
All the three are true.

The operation shows that it will be commutative and associative.

You can verify the same by expanding also.

III will come out to be
a+b+c+ab+bc+ca+abc
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by smallsorrow » Sun Sep 21, 2008 2:13 am
Thats correct.
I just could not figure out III.
c was confusing me....
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