In a hockey league there are 10 teams. Each team plays every other team once. If we can play 5 games every week, how many weeks long is one season?
Choose the correct choice from the following options:
A) 8
B) 9
C) 18
D) 20
E) 22
total matches = 10*9/2= 
<gadget id="calculator">10*9/2</gadget>
<output>45</output>
45   so number of weeks= 45/5= 
<gadget id="calculator">45/5</gadget>
<output>9</output>
9   ANSWER:9
<result>B</result>
In a hockey league there are 10 teams. Each team plays every other team once. If we can play 5 games every week, how many weeks long is one season?