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Five members were present at a board meeting. Each member shook hands with all of the other members before the meeting. How many handshakes took place?

Five members were present at a board meeting. Each member shook hands with all of the other members before the meeting. How many handshakes took place? Correct Answer 10

আমরা জানি, n সংখ্যক লোক যদি পরস্পরের সাথে handshake করে তাহলে handshake এর সংখ্যা হয় = n(n - 1)2 মোট 5 জন লোজ হলে এর সংখ্যা হবে = n(n - 1)2 = 5(5 - 1)2 = 10

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