Răspuns :
Sunt cam multe.
[tex]U(71^{10^{6}+1})= U(1^{10^6+1}) = 1\\ \\ \\U(1009^{9001}) = U(1009^{9000}\cdot 9) = U(9^{9000}\cdot 9) = U(81^{4500}\cdot 9) = \\ \\ = U(1\cdot 9) = 9[/tex]
Sunt cam multe.
[tex]U(71^{10^{6}+1})= U(1^{10^6+1}) = 1\\ \\ \\U(1009^{9001}) = U(1009^{9000}\cdot 9) = U(9^{9000}\cdot 9) = U(81^{4500}\cdot 9) = \\ \\ = U(1\cdot 9) = 9[/tex]