general math MCQ #59

Ten people shake hands with each other exactly once. How many total handshakes occur?

general math MCQ #59

  1. Question 1

    Q1. Ten people shake hands with each other exactly once. How many total handshakes occur?

    • A) 55
    • B) 45
    • C) 35
    • D) None of above

    Answer: 45

    Explanation: Each of 10 people shakes hands once with each other person: C(10,2) = 10×9/2 = 45 handshakes.