Toán Lớp 6: 13/ 168 x ; 240 x ; 312 x và x > 10
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Toán Lớp 6: 13/ 168 x ; 240 x ; 312 x và x > 10
Comments ( 2 )
240 vdots x
312 vdots x
=>x in ƯC(168,240,312)
168=2^3. 3.7
240=2^2. 3.5
312=2^3. 3.13
=>Ư CLN(168,240,312)=2^2. 3=12
=>ƯC(168,240,312)=Ư(12)={1;2;3;4;6;12}
Mà x>10=> x in{1;2;3;4;6}
Vậy x in{1;2;3;4;6}