document.write( "Question 315720: Evaluate the product of the following fractions:
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Algebra.Com's Answer #225883 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
\"%28%281%2F2+-1%2F3%29+%2F+%281%2F3-1%2F4%29%29\"\"%22%D7%22\"\"%28%281%2F4+-+1%2F5%29%2F%281%2F5-1%2F6%29%29\"\"%22%D7%22\"\"%28%281%2F6-1%2F7%29%2F%281%2F7-1%2F8%29%29\"\"%22%D7%22\"\"%22%B7%B7%B7%22\"\"%22%D7%22\"\"%28%281%2F98-1%2F99%29%2F%281%2F99-1%2F100%29%29\"
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document.write( "The sequence of upper left denominators is 2,4,6,8,···,98, and the\r\n" );
document.write( "general term for those upper left denominators is 2n, where n goes \r\n" );
document.write( "from 1 to 49. \r\n" );
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document.write( "Therefore the general factor of the whole product is \r\n" );
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document.write( "\"%281%2F%282n%29-1%2F%282n%2B1%29%29%2F%281%2F%282n%2B2%29-1%2F%282n%2B3%29%29\" where n goes from 1 to 49\r\n" );
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document.write( "Simplifying this general factor:\r\n" );
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document.write( "\"%281%2F%282n%29-1%2F%282n%2B1%29%29%2F%281%2F%282n%2B2%29-1%2F%282n%2B3%29%29=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"%281%2F%282n%29-1%2F%282n%2B1%29%29\"\"%22%F7%22\"\"%281%2F%282n%2B2%29-1%2F%282n%2B3%29%29=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"%28%28+%282n%2B1%29-%282n%29+%29%2F%282n%2A%282n%2B1%29%29%29\"\"%22%F7%22\"\"%28+%28%282n%2B3%29-%282n%2B2%29+%29%2F%28%282n%2B2%29%282n%2B3%29%29%29=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"%28%28+2n%2B1-2n+%29%2F%282n%2A%282n%2B1%29%29%29\"\"%22%F7%22\"\"%28+%282n%2B3-2n-2+%29%2F%28%282n%2B2%29%282n%2B3%29%29%29=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"%28+1+%2F%282n%2A%282n%2B1%29%29%29\"\"%22%F7%22\"\"%28+1+%2F%28%282n%2B2%29%282n%2B3%29%29%29=%22%22\"\r\n" );
document.write( "\r\n" );
document.write( "\"%28+1+%2F%282n%2A%282n%2B1%29%29%29\"\"%22%D7%22\"\"%28+%28%282n%2B2%29%282n%2B3%29%29%2F1%29=%22%22\"\r\n" );
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document.write( "\"%28+%282n%2B2%29%282n%2B3%29+%29%2F%282n%2A%282n%2B1%29%29\", where n goes from 1 to 49.\r\n" );
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document.write( "Substituting in n=1, \"%284%2A5%29%2F%282%2A3%29\"\r\n" );
document.write( "Substituting in n=2, \"%286%2A7%29%2F%284%2A5%29\"\r\n" );
document.write( "Substituting in n=3, \"%288%2A9%29%2F%286%2A7%29\"\r\n" );
document.write( "···\r\n" );
document.write( "Substituting in n=47, \"%2896%2A97%29%2F%2894%2A95%29\"\r\n" );
document.write( "Substituting in n=48, \"%2898%2A99%29%2F%2896%2A97%29\"\r\n" );
document.write( "Substituting in n=49, \"%28100%2A101%29%2F%2898%2A99%29\"\r\n" );
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document.write( "So we have:\r\n" );
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document.write( "\"%284%2A5%29%2F%282%2A3%29\"\"%22%D7%22\"\"%286%2A7%29%2F%284%2A5%29\"\"%22%D7%22\"\"%288%2A9%29%2F%286%2A7%29\"\"%22%D7%22\"\"%22%B7%B7%B7%22\"\"%22%D7%22\"\"%2896%2A97%29%2F%2894%2A95%29\"\"%22%D7%22\"\"%2898%2A99%29%2F%2896%2A97%29\"\"%22%D7%22\"\"%28100%2A101%29%2F%2898%2A99%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"%28cross%284%2A5%29%29%2F%282%2A3%29\"\"%22%D7%22\"\"%28cross%286%2A7%29%29%2F%28cross%284%2A5%29%29\"\"%22%D7%22\"\"%28cross%288%2A9%29%29%2F%28cross%286%2A7%29%29\"\"%22%D7%22\"\"%22%B7%B7%B7%22\"\"%22%D7%22\"\"%28cross%2896%2A97%29%29%2F%28cross%2894%2A95%29%29\"\"%22%D7%22\"\"%28cross%2898%2A99%29%29%2F%28cross%2896%2A97%29%29\"\"%22%D7%22\"\"%28100%2A101%29%2F%28cross%2898%2A99%29%29\"\r\n" );
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document.write( "As we see every numerator cancels with the denominator of the next factor,\r\n" );
document.write( "except in the last, or 49th, factor where there is no next factor.  And every\r\n" );
document.write( "denominator gets canceled with the preceding numerator except the 1st factor\r\n" );
document.write( "where there is no preceding factor.  Thus the product becomes:\r\n" );
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document.write( "\"%28100%2A101%29%2F%282%2A3%29\"\"%22=%22\"\"5050%2F3\"\r\n" );
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document.write( "Edwin

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