document.write( "Question 273346: Suppose the probability of A is .3, the Probability of B is .45 and the probability of P(A or B)=.7; what is the probability of A and B, that is P(A and B)? \n" ); document.write( "
Algebra.Com's Answer #199703 by jim_thompson5910(35256)\"\" \"About 
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Remember that P(A or B) = P(A) + P(B) - P(A and B). So simply solve for P(A and B) to get\r
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\n" ); document.write( "\n" ); document.write( "P(A and B) = P(A) + P(B) - P(A or B)\r
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\n" ); document.write( "\n" ); document.write( "Now just plug in the given values and simplify.
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