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Anarel [89]
3 years ago
6

There are 20 people in Susan’s class. Each person gives a card to everyone else in the class. How many cards were exchanged?

Mathematics
2 answers:
Marianna [84]3 years ago
6 0
Each student will give 19 cards so 20x19=380
qwelly [4]3 years ago
5 0
Every person in the class gives 19 cards 
⇒20*19=380 card were exchanged

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