Assuming that all stations are occupied and all lines are observed in both directions, compute the strength of figure factor for a pentagon with interior station and one diagonal.
0.60
0.56
0.68
0.70
\[
c = (n’ – S’ + 1) + (n – 2s + 3)
\]
\[
c = (11 – 6 + 1) + [11 – 2(6) + 3]
\]
\[
c = (11 – 6 + 1) + (11 – 12 + 3)
\]
\[
c = 8
\]
\[
F = \frac{D – c}{D}
\]
\[
F = \frac{20 – 8}{20}
\]
\[
F = 0.60 \leftarrow \text{answer}
\]