document.write( "Question 335339: using the numbers 21,17,19,13,25, how can I get the answer 17?
\n" ); document.write( "I can add, subtract, use any method, but the answer has to be 17 \n" ); document.write( "

Algebra.Com's Answer #240387 by Edwin McCravy(20066) $\"\"$ $\"About$

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using the numbers 21,17,19,13,25, how can I get the answer 17?
\n" ); document.write( "I can add, subtract, use any method, but the answer has to be 17
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document.write( "Since 17 itself is in the list, it occurs to us that if we can \r\n" );
document.write( "get 1 using the other 4 numbers, then we can multiply that 1 by 17 \r\n" );
document.write( "and get 17.\r\n" );
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document.write( "We look at the 13 and the 25, and we notice that 2 times 13 is 26,\r\n" );
document.write( "and that differs from 25 by 1, and we can get 2 to multiply 13 by \r\n" );
document.write( "from 21-19.  \r\n" );
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document.write( "We subtract 21 - 19 and get 2\r\n" );
document.write( "We multiply that 2 by 13 and get 26\r\n" );
document.write( "We subtract 25 from that 26 and get 1\r\n" );
document.write( "We multiply 17 by that 1 and get 17\r\n" );
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document.write( "{[(21 - 19)×13] - 25}×17 = 17\r\n" );
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document.write( "Edwin

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