File talk:Inclusion-exclusion-3sets.png
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Is the formula below correct? It seems to have more + signs than the formula on the main page. Scottedwards2000 (talk) 06:30, 19 February 2012 (UTC)
Is the formula below correct? It seems to have more + signs than the formula on the main page. Scottedwards2000 (talk) 06:30, 19 February 2012 (UTC)[reply]