document.write( "Question 1189967: 16 , 6 , 68 , 88 , ? , 98 \n" ); document.write( "
Algebra.Com's Answer #821493 by ikleyn(52790)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "(1)   First,  turn each digit upside down.\r
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\n" ); document.write( "\n" ); document.write( "(2)   Next,  in each two-digit number,  obtained this way, reverse digits.\r
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\n" ); document.write( "\n" ); document.write( "(3)   Finally,  read the obtained sequence and guess the missed number.\r
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\n" ); document.write( "\n" ); document.write( "                        It is  87.\r
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\n" ); document.write( "\n" ); document.write( "With this number,  87,  make inverse transformations.\r
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\n" ); document.write( "\n" ); document.write( "                        E N J O Y  ( ! )\r
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\n" ); document.write( "\n" ); document.write( "This puzzle is as old as Arabic numerals,  perhaps . . . \r
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\n" ); document.write( "\n" ); document.write( "The second number in your sequence, namely the number 6, is presented incorrectly : \r
\n" ); document.write( "\n" ); document.write( "it breaks the hidden logic of the puzzle . . . \r
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\n" ); document.write( "\n" ); document.write( "It is typical at this forum :   I rarely see a correctly written post here . . . \r
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\n" ); document.write( "\n" ); document.write( "When I see a correctly presented problem,  it is like a fiesta for me. . . \r
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