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1. Every person at a party of twenty-eight people said hello to each of the other people at the party exactly once. How many "hello's" were said at the party?

1. Every person at a party of twenty-eight people said hello to each of the other people at the party exactly once. How many "hello's" were said at the party?
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1. Every person at a party of twenty-eight people said hello to each of the other people at

the party exactly once. How many "hello's" were said at the party?

User Zgrkpnr
by
7.4k points

1 Answer

4 votes

Answer:

56

Explanation:

28 people to 28 hellos

User LucasKarlsson
by
8.5k points
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