ƯCLN(45,840,150,900)
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a/150=2.3.52
250=2.53
=>BCNN(150;250)=2.3.53=750
b/ 45=32.5
840=23.3.5.7
150=2.3.52
900=22.32.52
=>UCLN(45;840;150;900)=3.5=15
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có
45=5x32
840=23x3x5x7
150=2x3x52
900=22x32x52
Vậy UCLN(45,840,150,900)=3x5=15
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có: 45=32.5
840=23.3.5.7
150=52.2.3
900=22.32.52
Vậy ƯCLN(900;150;840)= 3.5=15
45=3^2*5
840 = 2^3*3*5*7
150= 2*3*5^2
900= 2^2*3^2*5^2
suy ra UCLN( 45,840,150 ,900 ) = 3*5=15
![](https://rs.olm.vn/images/avt/0.png?1311)
ta có :
45=32 x5
840=23 x 3x5x7
150=2x3x52
900=22 x 32 x 52
=>ƯCLN[45;840;150;900]=3x5=15
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có : 45 = 32.5
840= 23.3.5.7
150= 2.3.52
900=22.32.52
ƯCLN(45;840;150;900)=3.5=15
![](https://rs.olm.vn/images/avt/0.png?1311)
900 chia hêt cho 150
=> UCLN(45;840;150;900) =UCLN(45;840;150) ; UCLN( 45;150) =15 mà 840 chia hết cho 15
=> UCLN(45;840;150;900) = 15