Question

    Twelve persons meet in a conference and each shakes

    hands with all each others. How many hadnshakes takes place?
    A 66 Correct Answer Incorrect Answer
    B 75 Correct Answer Incorrect Answer
    C 144 Correct Answer Incorrect Answer
    D 132 Correct Answer Incorrect Answer

    Solution

    ATQ, Number of Handshakes = 12C 2 = (12 × 11)/2 = 66

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