document.write( "Question 723696: Can someone please help with the following:\r
\n" ); document.write( "\n" ); document.write( "determine whether true or false for events A and B. (EXPLAIN ANSWER)\r
\n" ); document.write( "\n" ); document.write( "P(A U B) - P(B) = P(A)\r
\n" ); document.write( "\n" ); document.write( "Thnk you sincerely.
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Algebra.Com's Answer #443294 by Positive_EV(69)\"\" \"About 
You can put this solution on YOUR website!
This is not true for all events A and B. P(A U B) - P(B) = P(A) - P(A ∩ B), in general.
\n" ); document.write( "This is a rewritten version of the Inclusion-Exclusion Principle: P(A U B) = P(A) + P(B) - P(A ∩ B).
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\n" ); document.write( "\n" ); document.write( "Your original statement is only true if A and B are mutually exclusive; that is, if only one of A or B (or neither) can ever happen at once.
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