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'Iffy Logic' printed from http://nrich.maths.org/
Thanks to Rushaan and Spencer from Cape
Academy, Western Cape, South Africa who sent us the most complete
solution. The full solution is:
Interestingly, if $n, m$ are positive whole numbers (as stated in
the question), then $n> 0$ is always true (a tautology). So, we
can in fact correctly write $n> 0$ IF [Any of the