Some couples participated in a mixed doubles badminton tournament. If the number of matches played, so that no couple played in a match, is 840, then the total numbers of persons, who participated in the tournament, is

A mixed doubles tennis game is to be played between two teams ( each team consists of one male and one female). There are four married couples. No team is to consist of a husband and his wife. What is the maximum number of games that can be played ?Options12424836

explain the following key rules of "Doubles" in Badminton.

If you have 10 tennis players in a round-robin tournament. How many games will they need to play before each player has played every other player?4550810Any of the aboveNone of the above

A table tennis tournament was going on with knock out terms which means the one who loses the match is out of the tournament. 100 players took part in that tournament. How many matches were played?

The Australian Open tennis tournament consists of 7 rounds of matches: Rounds 1, 2, 3, 4, the quarter-finals, the semi-finals and the finals. Half of the players (the losers of their matches) are removed after each round, so that there are only 2 players remaining in the final.(a) Starting at the final and working back through each round, write the number of players playing in each round as a number in index form.NOTE: INDICES ANSWERS ARE TO BE TYPED AS FOLLOWS:   5^3 for (b) Evaluate how many players are there at the start of the championship