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Duplicate of The Basic Counting Principal, Probability and Odds Flashcards | StudBud
Duplicate of The Basic Counting Principal, Probability and Odds
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I have to pick 2 students to represent 20 students, how many ways can I select 2 students?
A
20 nCr 2
B
I still don't know
C
20x20
D
20 nPr 2
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0
0
correct · 0:00
