Question

aflati ultima cifra a numerelor a=4³²¹+5¹⁷⁵+2²⁰¹³ si b=3²⁵³+6²⁰¹⁴+9¹⁵⁴​

Answer 1

Răspuns:

Explicație pas cu pas:

U(a)=U(U(4³²¹)+U(5¹⁷⁵)+U(2²⁰¹³))=U(U(4¹)+5+U(2¹))=U(4+5+2)=U(11)=1

U(b)=U(U(3²⁵³)+U(6²⁰¹⁴)+U(9¹⁵⁴))=U(U(3¹)+6+U(9²))=U(3+6+1)=U(10)=0