September 2018 1 9 Report

zapisz w jak najprostszej postaci wyrażenie :

a)5!(n+1)!/15(n-1)!n

b)(n+3)!/(n+2)!(n-1)

c)(n+2)!*(n+3)/(n+4)!

d)(n+3)!(n+5)!/(n+2)!(n+6)!

e)(n-2)!*(n-1)*n/n!*(n+1)

f) (n-3)!(n-2)(n-1)/n!(n+2)


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