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In a colony, there are 55 members. Every member posts a greeting card to all the members. How many greeting cards were posted by them? ​
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5 votes
In a colony, there are 55 members. Every member posts a greeting card to all the

members. How many greeting cards were posted by them?
​

User David Lukac
by
3.6k points

1 Answer

4 votes

Answer:

55*54

=2970

Explanation:

User Teich
by
3.0k points
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