Mathematics, 27.07.2019 07:40 julie47d

Agroup of 55 friends meets for lunch. they greet each other by exchanging fist bumps. how many fist bumps are exchanged if each friend must bump with each of the 54 others? the total number of fist bumps exchanged is?

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Agroup of 55 friends meets for lunch. they greet each other by exchanging fist bumps. how many fist...