Tìm các số tự nhiên x,y,z sao cho: \( \overline {x5} . \overline {3yz} = 7850. \)
A.\(\left( {x;\,y;\,z} \right) = \left( {2;\,\,1;\,\,4} \right).\)
B.\(\left( {x;\,y;\,z} \right) = \left( {3;\,\,2;\,\,4} \right).\)
C.\(\left( {x;\,y;\,z} \right) = \left( {1;\,\,1;\,\,5} \right).\)
D.\(\left( {x;\,y;\,z} \right) = \left( {2;\,\,2;\,\,2} \right).\)
A.\(\left( {x;\,y;\,z} \right) = \left( {2;\,\,1;\,\,4} \right).\)
B.\(\left( {x;\,y;\,z} \right) = \left( {3;\,\,2;\,\,4} \right).\)
C.\(\left( {x;\,y;\,z} \right) = \left( {1;\,\,1;\,\,5} \right).\)
D.\(\left( {x;\,y;\,z} \right) = \left( {2;\,\,2;\,\,2} \right).\)
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