Assume that if they wont speak to each other they wont


There are 108 people in a? room, half of whom? don't speak to the other half. Assume that if they? won't speak to each? other, they? won't shake hands. How many handshakes are there if everyone shakes hands only once ?(if they shake at? all)?

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Mathematics: Assume that if they wont speak to each other they wont
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