Chọn câu sai:
A. 3   ∈   Q " src="data:image/jpeg;charset=utf-8;base64,iVBORw0KGgoAAAANSUhEUgAAATEAAABYCAYAAACd6cBOAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAABKVi06EAAAC9JJREFUeNrtnQ9k1+sXx4+vmclEZjJJJMnkJ5LMZMYkkySSK5mMyU8m15grSSZyJdd1RZKZZCTJZEYmk+SSK1eSS5JkrsjMXJOx33N8T/2+2933+3nO58/385zP9/3iuN17d3c/5zzP53zOc57znIcoXUpODjoZcHLbyUMnr50sOFl2siJ/ZVl0Mu9k2smkk5+dnHKyl4BF2p30Oznt5JqTCScPZHznZQ4sVYz/qoeA/Nnp5KSTMSf3nEw5+VTxTn8VWZZ/9k5+hsf/gpOjTlpCV3K3kxEnM6LMagqyJI6NnVoT5lFwtDo55uS6OKmllMYdTix/2pyclffvS4pj+dLJFSedIX11f3TyKqPJWylfJErrwPzK/Ys86uSZRNSrdRBQH5rEcc3WaWz/kNVaKQ9l9zu5m2LEpY3ORjDf6kpJJtvzHMYbTqw+URdHR59zGt+/ZLVVV1YDkKcSCYLsaJZI+1POYw2ySwdcyjANoJUnTrY3khNjeQtHlhknnHwIZJxBNuP7KaB3uTJt1N9ITuxborAFczLVPOejwMYYpDu+DwN0XuvlQt5ObEkMxets3pY95GTTugQe/3mLkyNOBqm8C7IYU+FfMDdToYvKZRCrcGKFpM/J3wYc2De5WG8n9lLW1wcS/F52bGdkmahVuBNzNBFcKrFM6S4LHlN5A4h3lQdkCcNLhV4q7zJvkrwbyJ6RhOPJSf/7EiHxXNmzwQqI/363/PsRieiTbv4NZu3EPlK5+G1Xyr+/SaIrjbL3ME8T5UeS5ia5qJELXLvhmILjDsWvBPhNxjTJu8wfsD9iPgOXevRkYRSuETpO2dd3XFYoyx5/M+armp4YX0v++SmJmrfChMHSLNFwnKhrRCLltKP9OJtFnOJoszwQmkE4hXmrYqsyR8IR1zA+FmYc2EwMh8GnL1ozfK7NFG/jyPRKawf5Vw/fxtxV8cTTru8l6gJ20DoKjpC66vh8v8ZwZD2WB2TKU8kZzF1vhjxteoOQ47KGNgfGx4y25PCcE6QvpzLLWfLfEQPRtFP0od4lyWEAW4zGWKaVcnpW/jhqz133Wx2Y/Z4K/oM57MV4hB251OIQzGSOXqVDmAjgmbk0SnPY/KnVwWkm/10zUJt9HnY8DTOZjK41mzRTAT27tpxqp9VB8lFuGXM5kqhOFHdgIpNodvG5Ziuko3pbSVfmc6nITmwBc7kmhyl6F7IVZjLHGdKdpNgeoA6azQiTCX7f5eQs5nOiKKwXJjIH7ypq+oCdCFSPHuWS0lyt4h5CnVhSuiNsNwkTmeSm4sUPfYyL4IyrcrKoitWRWu1XOB+xAyYyBx+29t3Z4w4xoR8Rm1Q4savWBus2+e1Moq/YxmyLmOxoZVS8D9N6GTWgzzmFPg8sDVSTZ5h5C3O6KhepdpcARGH22KN44bnbjIVTF/0KnV5bGqzz5NeuYw/mdVVek416IeDPOAXUJTUlWhU6mSls5/YbPgV8WA7F/2LjaJE92sm/ruqzsTSLpnq/ZEGhaQ9F+LqnTZjXVanV0XPZykQA3umB9TJmTLcFhW5Bv/ecB3tAfoV7WEbWplZPqUcwj0neUXGP6GiOTgV70xkb/QX5VecfxHyuSSli2YFLiO3RTcU+LD2r0G9XaA/fJqGvz2UVfF/ePsznSLqooG1NGhhNM8Ehg/o9I2NV+xwpHKXyTotvonKGcGGuL1Fn6nbBRObwvfB2hWz2pddU7dctJ8aOindHDojD4hfrloS6mpPrX4x+WfLkVoRNm2AiU+xXvC9zRnXUJPYzmb/LFZLW/YX8u65RPu1zrRNV0Q1sobk78rJRHX0Dm5WsHiDN23//loHA0jE+LymsG51xA3gyphU2s9iRpFmh30LITowrcQcI9Uv1Ds3hxMKmpFjhfDX6/miOUs2F7MQqu0/ybuVezN9Ey3s4scbLhz0zquNxCqCtUFaTmB3aECERrWUFTqwwaLq3Wm2GcF6h43VrTqyyPuwc5jOcWAOiOfD9g1EdNfdQnrLqxL4J31WHYlcsJxuJJwp7dRvV8YVCx7qf1uFdB66u7ZN177CTu07+TDCxV+T3gOogsV8clijn+qmMiToit/7dD2rjolVCwwcxlz83Mb+roi2xWKG1tX5pCO82LyaURkdTemDVXvsUOv4esiJcEzam/Oqgn1h1UOxaDLqo2Ie+mUEq2MZFB5U7jmoc2X8x1/9F1N0E2O21wTHFe3DfqI6aS0JOWlJslHTHk9BbbC04AF4MTiveg3GjOmr6iJk72K65AWUO8121DEErnuIttSzmiDWFvK+sDuJvCiUPYc5/J2rHZxQmMsE1xfz/yaB+lxX6jVkdRG7l88FTSbRcXgvaU9tH8xEfNKifptTKdDdn32UlRx6tmPffGYmwFZL7cGJ50qnQ7b31geSXbdFT2ROY99+J6gxwHCYKnusFXm79rNDtahEG03cb9lfM+zXg8lzbDFExE/scmGh2JQuxm+671Yxcz1p+otpV+jtgokLMe5a7hvQ6S8Uv4v0XvpXLHzHv19BBtY904cRD2Gj6bFmKrN8o9DpalMFsIf/usGAttS4j/opoLGgOUgBtm3N0zG+KNqC+O5RgLVGXrk7CRMGiOQAezH2MNeD6xbcKfc7AiYFvRPVr6oOJgkXz0oe+43yhkaOwEpaTieij6Doc1NiFyT0qRpcHzs8uKnQ5UrSBbPNU/AvmfFWirokfh4mCRLOTNx+wHo8Vejwu4kD2eyo/jTlfFZ/mc2dgpiAjGE1eLMTUwLDi+bmnYCE3my55GmACc74mURcycFujXpgpOH5XOIGZwJ6dGzNoOjefb/RBRIPE2rTLkjsqr4gjSXYjGZb9gTz3biefG30ZyXQaHLyQ8e1RdYPK9Xkgf1rl46K5rzVvtlO5+Nz3mfln24o6gPfJflIzNHyvAeNdS+TJwuCGMhrLs2ccR2CfSJcHK2wA0ke4NCQLtpLuAO5fsqTZAtPlxjbS3Se6Qvkk+Xs9Uhbr5ViRX7R5hSHQZ19HD/nf91dZTMx5iwEZH1BfxpTjxXVZ9bpQl2s5r5D+6sXBog4Wr41fKQyB7hXxOE7JLrflavIJWXLyLlQzTJoprbLE14wR59J+yPi5Dijf19w24l7K/zTr5NtO0h214OgAt/fE55hymeJzEHlKnNsNcXDcrLJflhocwbXA4SVarsUZFz4j25Hys3Ae62HM5xnIw3iVa+1peYi0cyTn5CXQGOMS5nViDiqX7vUSkM6ysvKD/0vC1AsHMdys8XmCj9zhvAxXLXnITctGKP7uQknC3T9jGARXtaVHuyzL4cRs8DihbbnrL/fwP0Xl/GjLBu8lz4kj8jM3ZTW2QsnSD7mumnzX3w/lS8H5lq4NjLNJQuIBCXEXYhrkDRW4riTnPNkHOLHgaUkQDeUhE/LuU+hOrF7yNoP1Pfg/3AOd26Z8hBMLGk70zwbuvOYpoAt8QjHKrIS5IHt4ScGJ+WdwYsHCGyTjgTowXoIGVVuYt0F4LY4kfn7skNznXMK8CJxYNvDHZjEQ58X5us4QjbSXyjsbeexizYZqlAaFcxtcmnFNJuw/cGJB0EHRnUqyFM5vm7ipm5cYvEV6m/THC+J49EOYmybgZUO/RARX5WXiTR4ux/kgUQI7u2U4scz5D5U7wq7k4Mj4zORlMnaig3cgeTfyeQpG+1ay8SOVz4oBAOLDu/dcoP4kB4fG/78p+bCVLBmtSaK08/IlZiU+V3yBl+XPHHa+ki81JyWH5L9rwrwDINN3c7ji3XwvEfJyhSzJCos3cx7Jz3KCPslONaegrhNaZQEAck4XpLEL+k7SDQdgUgBAHhwm/SH0WhHaHSqfCMBtWwCAusGnBbjtjraVU1QOjY81cdOAE3BqAIB6wLWDk5TtyRzeZeUcez+hXToAICP4OsA5yn7HcximBgBkSXeGzgwODABQN7h2dDpFBzYCkwIA8oCbL3KNWZLOwRdhRgBA3mym8ikcTdt5ODAAQJDwWWg+BRBVnnEFpgIAhAzXgfF1bU83cGBjMA8AwBLbZLn5gsrtnVT8D64ATGaSes93AAAAnHRFWHRNYXRoTUwAPG1hdGggeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzE5OTgvTWF0aC9NYXRoTUwiIHN0eWxlPSJmb250LWZhbWlseTpBcmlhbCI+PG1uPjM8L21uPjxtbz4mI3hBMDs8L21vPjxtbz4mI3gyMjA4OzwvbW8+PG1vPiYjeEEwOzwvbW8+PG1pPlE8L21pPjwvbWF0aD7Q3wryAAAAAElFTkSuQmCC" style="width: 48.00px; height: 13.33px; margin-left: 0.00px; margin-top: 0.00px; transform: rotate(0.00rad) translateZ(0px); -webkit-transform: rotate(0.00rad) translateZ(0px);" title="3 space element of space Q">
B. 5 3   ∈   Z " src="data:image/jpeg;charset=utf-8;base64,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" style="width: 52.00px; height: 33.33px; margin-left: 0.00px; margin-top: 0.00px; transform: rotate(0.00rad) translateZ(0px); -webkit-transform: rotate(0.00rad) translateZ(0px);" title="5 over 3 space element of space Z">
C. 0 3   ∈   Q " 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" style="width: 56.00px; height: 33.33px; margin-left: 0.00px; margin-top: 0.00px; transform: rotate(0.00rad) translateZ(0px); -webkit-transform: rotate(0.00rad) translateZ(0px);" title="0 over 3 space element of space Q">
D. 1 2   ∉ N " 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RFWHRNYXRoTUwAPG1hdGggeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzE5OTgvTWF0aC9NYXRoTUwiIHN0eWxlPSJmb250LWZhbWlseTpBcmlhbCI+PG1mcmFjPjxtbj4xPC9tbj48bW4+MjwvbW4+PC9tZnJhYz48bW8+JiN4QTA7PC9tbz48bW8+JiN4MjIwOTs8L21vPjxtaT5OPC9taT48L21hdGg+cHZwrQAAAABJRU5ErkJggg==" style="width: 49.33px; height: 33.33px; margin-left: 0.00px; margin-top: 0.00px; transform: rotate(0.00rad) translateZ(0px); -webkit-transform: rotate(0.00rad) translateZ(0px);" title="1 half space not an element of N">