a )
Ta có :
\(3^{40}=\left(3^4\right)^{10}=81^{10}\)
\(5^{30}=\left(5^3\right)^{10}=125^{10}\)
Do \(125^{10}>81^{10}\)
\(\Rightarrow5^{30}>3^{40}\)
b )
Ta có : \(5^{303}>2^{44}\left(5>2;303>44\right)\)
c )
Ta có : \(5^{303}>2^4\left(5>2;303>4\right)\)
a) 340 = (33)10 = 910
530 = ( 53 )10 = 12510
Mà \(9^{10}< 125^{10}\Rightarrow3^{40}< 5^{30}\)
Vậy ....
b) 5303 > 244 ( vì 5 > 2 ; 303 > 44 )
c) 5303 > 24 ( vì 5 > 2 ; 303 > 4 )