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Answered

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How many different selections of 4 books can be made from a bookcase displaying 12 books?

Sagot :

Answer:

495

Step-by-step explanation:

12C4 = 12*11*10*9/(4*3*2*1) = 495

31507

Answer:

495

Step-by-step explanation:

12C4 = 12*11*10*9/(4*3*2*1) = 495

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