Help meeeeeeeeeeeeeeeeeeeee

Bài `2`: Tìm số tự nhiên `a` lớn nhất, biết:

`a) a ∈ƯCLN(120;504)`

`120=` $2^{3}$`.3.5`

`504=` $2^{3}$`.`$3^{2}$`.7`

`=>` ` ƯCLN(120;504)=` $2^{3}$`.3=24`

`b) a∈ƯCLN(240;300)`

`240=` $2^{4}$`.3.5`

`300=` $2^{2}$`.3.`$5^{2}$

`=>` ` ƯCLN(240;300)=` $2^{2}$`.3.5=60`

`c) a∈ƯCLN(175;385)`

`175=` $5^{2}$`.7`

`385=5.7.11`

`=>` ` ƯCLN(175;385)=5.7=35`

`#Tr_g`