Question

In a national tennis tournament, a total of 105 matches were played. Every 2 teams played only 1 match with each other, then what is the number of teams that participated in the tournament ?

Shweta  February 07 2022 01:11:51 PM
It is given that every 2 teams played only 1 match,

therefore, nC₂ = 105

Here, we can take the help of the options,

If we put n = 15, it satisfies the condition. Therefore, number of teams participated = 15