Question 1083647
_, 2, _, _, _, 5, _, _, _, _, _


d, common difference
{{{2+4*d=5}}}
{{{4d=3}}}
{{{d=3/4}}}


<pre>
The poles in order:
1.25, 2, 2.75, 3.5, 4.25, 5, 5.75, 6.5, 7.25, 8, 8.75
</pre>