document.write( "Question 831867: Look at the number series below.
\n" ); document.write( "16, ( ? ), 13, 15, 6, 24
\n" ); document.write( "If the average of the series is 15, then what is the missing number?
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Algebra.Com's Answer #501710 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
The average is the sum of values divided by the number of values.
\n" ); document.write( "\"A=%2816%2BX%2B13%2B15%2B6%2B24%29%2F6=15\"
\n" ); document.write( "\"16%2BX%2B13%2B15%2B6%2B24=90\"
\n" ); document.write( "Now solve for \"X\".
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