document.write( "Question 285501: series of 13, 18, 16, 21, 19 \n" ); document.write( "
Algebra.Com's Answer #206968 by checkley77(12844)\"\" \"About 
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series of 13, 18, 16, 21, 19
\n" ); document.write( "The sequence is +5, -2, +5, -2, +5, -2
\n" ); document.write( "13+5=18-2=16+5=21-2=19+5=[24]-2=[22]+5=[27]
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