How many diﬀerent channels are needed for six television stations (A, B, C, D, E, F) whose distances (in miles)
from each other are shown in the following table? Assume that two stations cannot use the same channel
when they are within 150 miles of each other? $$\begin{array} { c c c c c c c }
& A & B & C & D & E & F \
A & - & 85 & 175 & 100 & 50 & 100 \
B & 85 & - & 125 & 175 & 100 & 130 \
C & 175 & 125 & - & 100 & 200 & 250 \
D & 100 & 175 & 100 & - & 210 & 220 \
E & 50 & 100 & 200 & 210 & - & 100 \
F & 100 & 130 & 250 & 220 & 100 & -
\end{array}$$

Question

How many diﬀerent channels are needed for six television stations (A, B, C, D, E, F) whose distances (in miles)
from each other are shown in the following table? Assume that two stations cannot use the same channel
when they are within 150 miles of each other? $$\begin{array} { c c c c c c c } 
& A & B & C & D & E & F \
A & - & 85 & 175 & 100 & 50 & 100 \
B & 85 & - & 125 & 175 & 100 & 130 \
C & 175 & 125 & - & 100 & 200 & 250 \
D & 100 & 175 & 100 & - & 210 & 220 \
E & 50 & 100 & 200 & 210 & - & 100 \
F & 100 & 130 & 250 & 220 & 100 & -
\end{array}$$

Quizplus · Accepted Answer

The Answer of How many diﬀerent channels are needed for six television stations (A, B, C, D, E, F) whose distances (in miles)
from each other are shown in the following table? Assume that two stations cannot use the same channel
when they are within 150 miles of each other? $$\begin{array} { c c c c c c c } 
& A & B & C & D & E & F \
A & - & 85 & 175 & 100 & 50 & 100 \
B & 85 & - & 125 & 175 & 100 & 130 \
C & 175 & 125 & - & 100 & 200 & 250 \
D & 100 & 175 & 100 & - & 210 & 220 \
E & 50 & 100 & 200 & 210 & - & 100 \
F & 100 & 130 & 250 & 220 & 100 & -
\end{array}$$

How Many Diﬀerent Channels Are Needed for Six Television Stations