At a business meeting of five people, every person shakes hands with every other person one time. How many total handshakes occur
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10 handshakes will be there .
—☆There are 5 people.
—☆Each will shake hand once .
—☆ Total number of handshakes .
Let the five people as A , B , C , D , E
—☆ Now A will shake hand with B , C, D, E.
—☆ B will shake hand with C , D, E ( As he has already done with A ) .
—☆ C will shake hand with D and E .
—☆ D will shake hand with E .
—☆ E has no need to shake hand as everyone has did .
So total number of hand shakes is 4 + 3 + 2 + 1
→ 10 times
—☆In this type of questions we use a formula that is
So , answer is 10 times .
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