Question 1043393
<font face="Times New Roman" size="+2">
<pre>

799 - 761 = 38
761 - 685 = 76 = 2 X 38
685 - 419 = 266 = 7 X 38

So 419 + (4 X 38) = 571 and 571 + (3 X 38) = 685.

Your missing number is 571
</pre>

John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  

</font>