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jay invited 10 of his friends on his birthday if all of them greeted each other with handshake then how many handshake will take place |
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Answer» ong>Answer: 55 handshakes Step-by-step explanation: There is SIMPLE and easy formula n(n+1)/2 To work this out. Just substitute n=10.And Voila! Kindly MARK as Brainliest if helpful. Add a THANKS too. :D |
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