Q1 of 42 Page 140

Evaluate

(i) 8 ! (ii) 4 ! – 3 !

(i) 8! = 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 40320


(ii) 4!-3! = (4 × 3!)-3! = 3!(4-1) = 3 × 2 × 1 × 3 = 18


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