EPFO 2015 English Medium Solved Paper

Question : 10 of 120

Marks: +1, -0

In a chess tournament, each of the six players will play with every other player exactly once. What is the number of matches that will be played during the tournament?

$10$
$15$
$20$
$25$

Validate

Solution:

Required number of matches

={n×(n-1)}/2

=={6×(6-1)}/2

=3×5=15

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