Question 900318
27<br>Maybe....<br>
2 <b>+7</b> = 9
9 <i>-4</i> = 5
5 <b>+8</b> = 13
13 <i>-3</i> = 10
10 <b>+9</b> = 19
19 <i>-2</i> = 17
17 <b>+10</b> = 27
27 <i>-1</i> = 26
26 <b>+11</b> =37
37 <i>-0</i> = 37<BR> Positives go up, negatives go down.  Every other pair.  I couldn't find a better pattern given these numbers.