Question

[Trương Thị Kim Mỹ]

so sánh hai số A=333⁵⁵⁵ và B=555³³³

Answer 1

[TheHackerGMVN]

vfyhgjn

Answer 2

[Trần Thị Vân Ngọc]

Ta có: \(333^{555}=\left(3.111\right)^{555}=3^{555}.111^{555}=\left(3^5\right)^{111}.111^{555}=243^{111}.111^{555}\)

\(555^{333}=\left(5.111\right)^{333}=5^{333}.111^{333}=\left(5^3\right)^{111}.111^{333}=125^{111}.111^{333}\)

Vì \(125^{111}< 243^{111}\)và \(111^{333}< 111^{555}\)

\(\Rightarrow125^{111}.111^{333}< 243^{111}.111^{555}\)

Vậy \(555^{333}< 333^{555}\)