document.write( "Question 644720: 25% failed math, 17.6% failed biology. 10.5% failed both\r
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Algebra.Com's Answer #405226 by reviewermath(1029)\"\" \"About 
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probability = 0.25 + 0.176 - .105 = 0.321 or 32.1% \n" ); document.write( "
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