neiminaalifios neiminaalifios

21-01-2022
Mathematics

contestada

Every person at a party of twenty eight people said hello to each of the other people at the party once. How many "hellos" were said at the party?

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anthesiagray anthesiagray

21-01-2022

Answer:

756 hellos

Step-by-step explanation:

Each 28 persons say hello once to every 27 persons

So, 28 × 27= 756

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