Q3 of 42 Page 140

Compute


Expanding all the factorials:



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1

Evaluate

(i) 8 ! (ii) 4 ! – 3 !

 2

Is 3 ! + 4 ! = 7 ! ?

 4

If

5

Evaluate ,when

(i) n = 6, r = 2


(ii) n = 9, r = 5