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When all n teams in a league play every other team​ twice, a total of N games are​ played, where Upper N equals n squared minus n. A soccer league has 6 teams and all teams play each other twice. How many games are​ played?

Respuesta :

Answer:

Step-by-step explanation:

n teams , teach team plying  with every team twice .

no of games N  =  2 x nC₂ = [tex]\frac{n(n-1)\times 2 }{2}[/tex]

= n² - n

If n = 6

no of games played = 6² - 6

= 30 .

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