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04272007  #1 
Join Date: Oct 2006
Posts: 822

Inclusion Exclusion
Let U=(1,2,3..,1000) and let A_{2},A_{3}, and A_{5} be the numbers that are divisible by 2,3, and 5 respectively. Find:
a. The intersection of all 3 sets (I solved this already) b. The intersection of A_{2},A_{3}, and the compliment of A_{5} c. The intersection of A_{2}, the compliment ofA_{3}, and A_{5}. d. The intersection of the compliment of A_{2},A_{3}, and A_{5} e. The intersection of A_{2}, the compliment of A_{3}, and the compliment of A_{5}
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. Last edited by Sillysidley; 04272007 at 06:30 PM.. 
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