Hi everyone, first time posting on this forum and was hoping if someone would be willing to explain how to do the below question. Any help appreciated, thanks.

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- October 12th 2012, 12:09 AMfloorplayCombinatorics / Inclusion/Exclusion Question
Hi everyone, first time posting on this forum and was hoping if someone would be willing to explain how to do the below question. Any help appreciated, thanks.

http://mathhelpforum.com/image/png;b...AAAElFTkSuQmCC - October 14th 2012, 09:37 AMPlatoRe: Combinatorics / Inclusion/Exclusion Question