Question

ƯCLN (40,50,90)

ƯCLN (175,250)

ƯCLN(100,120)

 

Answer 1

Ta có:

\(40=5\cdot2^3\)

\(50=5^2\cdot2\)

\(90=2\cdot3^2\cdot5\)

\(\RightarrowƯCLN\left(40,50,90\right)=5\cdot2=10\)

_________________

Ta có:
\(175=5^2\cdot7\)

\(250=2\cdot5^3\)

\(\RightarrowƯCLN\left(175,250\right)=5^2=25\)

_______________

Ta có:

\(100=2^2\cdot5^2\)

\(120=2^3\cdot5\cdot3\)

\(\RightarrowƯCLN\left(100,120\right)=2^2\cdot5=20\)

Answer 2

40 = 2³ . 5

50 = 2 . 5²

90 = 2 . 3² . 5

⇒ ƯCLN ( 40 , 50, 90 ) = 2 . 5 = 10.

Answer 3

175 = 5² . 7

250 = 2 . 5³ 

⇒ ƯCLN ( 175 , 250 ) = 5² = 25.

Answer 4

100 = 2² . 5²

120 = 2³ . 3 . 5

⇒ ƯCLN ( 100 , 120 ) = 2² . 5 = 20.