thandomhlongo thandomhlongo

29-05-2022
Mathematics

contestada

How many participants will make 45 handshakes in total

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kyrozzie kyrozzie

29-05-2022

N - number of participants
n(n-1)/2=45
n^2-n-90=0
(n-10)(n+9)=0
n(1)= 10

Your answer would be 10 participants

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