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Answer:
60480
Explanation:
Recall ;
nPr = n! ÷ (n - r)!
9P6 = 9! ÷ 3!
9P6 = (9*8*7*6*5*4*3!) / 3!
9P6 = 9*8*7*6*5*4
9P6 = 60480