Five teams have to compete in a league, with every team playing every other team exactly once, before going to the next round. How many matches will have to be held complete the league round of matches?

Five teams have to compete in a league, with every team playing every other team exactly once, before going to the next round. How many matches will have to be held complete the league round of matches?

Five teams have to compete in a league, with every team playing every other team exactly once, before going to the next round. How many matches will have to be held complete the league round of matches?

(A) 20 (B) 10 (C) 8 (D) 5


Answer: (B)

Exp: For a match to be played, we need 2 teams
No of matches = no. of ways of selections 2 teams out of 5
C2  5 10