Question

$( {3}^{45} + {7}^{81} )este \: divizibil \: cu \: 2$
Vă rog.​

Answer 1

$U(3^{45})=U(3^5)=3\\U(7^{81})=U(7^1)=7\\(3^{45}+7^{81})=(3+7)=10\\10:2=5$

10 divizibil cu 2