153 games were played at a chess tournament with each contestant playing once against each of the others. The number of participants is

If 36 games were played at a chess tournament with each contestant playing once aginst each of the other then the number of participants is

If in a chess tournament each contestant plays once against each of the other and in all 45 games are played, then the number of participants, is

If in a chess tournament each contestant plays once against each of the other and in all 45 games are played, then the number of participants, is

Thirty six games were played in a football tournament with each team playing once against each other. How many teams were there?

Thirty six games were played in a football tournament with each team playing once against each other. How many teams were there?

Thirty six games were played in a football tournament with each team playing once against each other. How many teams were there?

Thirty six games were played in a football tournament with each team playing once against each other. How many teams were there?

Thirty six games were played in a football tournament with each team playing once against each other. How many teams were there?

Twenty-eight games were played in a football tournament with each team playing once against each other. How many teams were there?

Twenty-eight games were played in a football tournament with each team playing once against each other. How many teams were there?