There are, in a certain league, 20 teams, and each team face another team for a total of 4 times. How many games are played in the season? Choose the correct choice from the following choices:
A) 450
B) 760
C) 110
D) 180
E) 400

Rationale: "by using the formula , t [ n ( n - 1 ) / 2 ] , where t = no . of games between two teams and n = total no . of teams , we get : 760 option b ."
Answer: B