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प्रश्न
In a kabaddi championship, there were played 136 matches. Every team played one match with each other. The number of teams participating in the championship is ______
पर्याय
17
18
9
13
MCQ
रिकाम्या जागा भरा
उत्तर
In a kabaddi championship, there were played 136 matches. Every team played one match with each other. The number of teams participating in the championship is 17.
Explanation:
`""^"n""C"_2 = 136`
⇒ `(n(n - 1))/2 = 136 ⇒ n = 17`
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Permutations - Properties of Permutations
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