\(ƯCLN\left(20,30\right)=10\)
\(ƯCLN\left(36,18\right)=18\)
\(ƯCLN\left(12,16,24\right)=4\)
Ta có :
`20 = 2^2.5`
`30 = 5.2.3`
`=> ƯCLN(20,30) = 2.5=10`
---------------------------
Ta có :
`36 = 2^2 . 3^2`
`18=2 . 3^2`
`=> ƯCLN(36,18) = 3^2.2 = 18`
---------------------------
Ta có :
`12 = 2^2.3`
`16=2^4`
`24= 2^3.3`
`=>ƯCLN(12,16,24)= 2^2=4`