document.write( "Question 1017610: Guess the rule.
\n" ); document.write( "2-4-6 satisfies the rule
\n" ); document.write( "2-4-5 does not
\n" ); document.write( "2-5-5 does
\n" ); document.write( "3-4-5 does not
\n" ); document.write( "3-6-6 does
\n" ); document.write( "4-5-6 does not
\n" ); document.write( "4-5-7 does not
\n" ); document.write( "4-5-9 does \n" ); document.write( "
Algebra.Com's Answer #633916 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "One possible rule is:\r\n" );
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document.write( "If we add the 2nd and 3rd numbers and then \r\n" );
document.write( "subtract 6, we always get twice the first number.\r\n" );
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document.write( "Guess the rule.\r\n" );
document.write( "

\n" ); document.write( "2-4-6 satisfies the rule
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\r\n" );
document.write( "because if we add the 2nd and 3rd numbers, \r\n" );
document.write( "4+6, we get 10, \r\n" );
document.write( "then if we subtract 6, we get 4,\r\n" );
document.write( "and 4 is twice the 1st number 2\r\n" );
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\n" ); document.write( "2-4-5 does not
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\r\n" );
document.write( "because if we add the 2nd and 3rd numbers, \r\n" );
document.write( "4+5 we get 9, \r\n" );
document.write( "then we subtract 6 and get 3,\r\n" );
document.write( "and 3 is NOT twice the first number 2\r\n" );
document.write( "

\n" ); document.write( "2-5-5 does
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\r\n" );
document.write( "because if we add the 2nd and 3rd numbers,\r\n" );
document.write( "5+5 we get 10, \r\n" );
document.write( "then we subtract 6 and get 4,\r\n" );
document.write( "and 4 is twice the first number 2\r\n" );
document.write( "

\n" ); document.write( "3-4-5 does not
\n" ); document.write( "
\r\n" );
document.write( "because if we add the 2nd and 3rd numbers, \r\n" );
document.write( "4+5 we get 9, \r\n" );
document.write( "then we subtract 6 and get 3,\r\n" );
document.write( "and 3 is NOT twice the first number 3\r\n" );
document.write( "

\n" ); document.write( "3-6-6 does
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\r\n" );
document.write( "because if we add the 2nd and 3rd numbers, \r\n" );
document.write( "6+6 we get 12, \r\n" );
document.write( "then we subtract 6 and get 6,\r\n" );
document.write( "and 6 is twice the 1st number 3\r\n" );
document.write( "

\n" ); document.write( "4-5-6 does not
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\r\n" );
document.write( "because if we add the 2nd and 3rd numbers, \r\n" );
document.write( "5+6 we get 11, \r\n" );
document.write( "then we subtract 6 and get 5,\r\n" );
document.write( "and 5 is NOT twice the first number 4.\r\n" );
document.write( "

\n" ); document.write( "4-5-7 does not
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\r\n" );
document.write( "because if we add the 2nd and 3rd numbers, \r\n" );
document.write( "5+7 we get 12, \r\n" );
document.write( "then we subtract 6 and get 6,\r\n" );
document.write( "and 6 is NOT twice the first number 4.\r\n" );
document.write( "

\n" ); document.write( "4-5-9 does
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\r\n" );
document.write( "because if we add the 2nd and 3rd numbers,\r\n" );
document.write( " 5+9 we get 14, \r\n" );
document.write( "then we subtract 6 and get 8,\r\n" );
document.write( "and 8 is twice the first number 4.\r\n" );
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document.write( "The rule works.  But there are probably many other\r\n" );
document.write( "rules that would do.\r\n" );
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document.write( "Edwin
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