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Aflati ultima cifra a nr n=2016la puterea 2017+2017la puterea 2018+2019la puterea 2020

Răspuns :

Renatemambouko
Uc(n)=Uc(2016^2017+2017^2018+2019^2020)=Uc(6+9+1)=Uc(16)=6
Uc(2016^2017)=Uc(6^2017)=6
Uc(2017^2018)=Uc(7^2018)=Uc[7^(4*504+2)]=Uc(7^2)=Uc(49)=9
Uc(2019^2020)=Uc(9^2020)=Uc(9^2*1010)=Uc(9^2)=Uc(81)=1

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