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OpenStudy (anonymous):
Check my answer plz. Giving Medal! In how many ways can you arrange 9 performers in a row on a stage? A. 81 ways B. 45 ways C. 40,320 ways D. 362,880 ways
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OpenStudy (anonymous):
@hartnn
hartnn (hartnn):
correct! :) you know this stuff :)
OpenStudy (anonymous):
Thanks. I'm learning. :)
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