Subject
Bank Exam
Topic
Southeast Bank Ltd. - Probationary Officer - 2016
In a chess tournament each of six players will play every other player exactly once. How many matches will be played during the tournament ?
In a chess tournament each of six players will play every other player exactly once. How many matches will be played during the tournament ?
ক)
12খ)
15গ)
30ঘ)
36Explanation
Solution: একটি দাবা টুর্নামেন্টে ছয়জন খেলোয়ার প্রতি জনের সাথে খেলবে । টুর্নামেন্টে কতটি ম্যাচ অনুষ্ঠিত হবে ? পাঠক, এটি সমাবেশ (Combination) এর অংক । এক্ষেত্রে বহুল ব্যবহৃত সূত্রটি হলোঃ n c r. উল্লেখ্য, n ও r যোগবোধক পূর্ণসংখ্যা n r. এখানে n = 6 এবং r = 2. তাহলে, 6 c 2 = = 15.Related questions
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