SOLUTION: : There is 7 friends (A1,A2,A3....A7).If A1 have to have shake with all with out repeat. How many hand shakes possible?(I dont know the exact question but like this only)
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-> SOLUTION: : There is 7 friends (A1,A2,A3....A7).If A1 have to have shake with all with out repeat. How many hand shakes possible?(I dont know the exact question but like this only)
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Question 338808: : There is 7 friends (A1,A2,A3....A7).If A1 have to have shake with all with out repeat. How many hand shakes possible?(I dont know the exact question but like this only)
You can put this solution on YOUR website! A1 can shake hands with 6 people, A2-A7
A2 can shake hands with 5 people, A3-A7
and so on
If there are n people, there are (n-1)! ways for them to shake hands.
In this case, 6!=720 ways.
