there are 20 people in a room if they each shake eachothers hands once and only once. how many handshakes are there all together

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Todd Richardson asked May 21, 2022

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there are 20 people in a room if they each shake eachothers hands once and only once. how many handshakes are there all together

Mathematics
high-school

Todd Richardson asked May 21, 2022

by Todd Richardson

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14 votes

19 they don’t shake their own hand I think

Vladzaba answered May 24, 2022

by Vladzaba

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12 votes

Answer:

Explanation:

Macalaca answered May 27, 2022

by Macalaca

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