In a cricket championship there are 36 matches. The number of teams, if each plays 1 match with other, is

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Solution

The correct option is B 9
Let n be the number of teams
$∵^{n} C_{2} = 36$
$\Rightarrow \frac{n (n - 1)}{1.2} = 36$
$\Rightarrow n (n - 1) = 72 = 9 \times 8$
$\Rightarrow n = 9$

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In a cricket championship there are 36 matches. The number of teams, if each plays 1 match with other, is

The correct option is B 9Let n be the number of teams∵nC2=36⇒n(n−1)1.2=36⇒n(n−1)=72=9×8⇒n=9

The correct option is B 9
Let n be the number of teams
$∵^{n} C_{2} = 36$
$\Rightarrow \frac{n (n - 1)}{1.2} = 36$
$\Rightarrow n (n - 1) = 72 = 9 \times 8$
$\Rightarrow n = 9$