<p><span style='position:relative' class='latex-wrapper'><img alt="\Rightarrow" height="13" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:19px; height:13px" width="19">\(\Rightarrow\)</span> Chọn đáp án <span style='position:relative' class='latex-wrapper'><img alt="\exists x\mathbb{\in Q}:x^{2} = 2." height="19" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:123px; height:19px" width="123">\(\exists x\mathbb{\in Q}:x^{2} = 2.\)</span></p> <p><strong>Câu 6. </strong>Cho ba mệnh đề: <span style='position:relative' class='latex-wrapper'><img alt="P:" height="12" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:24px; height:12px" width="24">\(P:\)</span> “số <span style='position:relative' class='latex-wrapper'><img alt="20" height="16" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:19px; height:16px" width="19">\(20\)</span> chia hết cho <span style='position:relative' class='latex-wrapper'><img alt="5" height="17" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:9px; height:17px" width="9">\(5\)</span> và chia hết cho <span style='position:relative' class='latex-wrapper'><img alt="2" height="17" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:9px; height:17px" width="9">\(2\)</span> ”</p> <p>Q: “ Số <span style='position:relative' class='latex-wrapper'><img alt="35" height="12" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:18px; height:12px" width="18">\(35\)</span> chia hết cho <span style='position:relative' class='latex-wrapper'><img alt="9" height="16" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:9px; height:16px" width="9">\(9\)</span> ”</p> <p>R: “ Số <span style='position:relative' class='latex-wrapper'><img alt="17" height="13" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:18px; height:13px" width="18">\(17\)</span> là số nguyên tố ”</p> <p>Hãy tìm mệnh đề <strong>sai</strong> trong các mệnh đề dưới đây:</p> <ol style="list-style-type: upper-alpha;"> <li><span style='position:relative' class='latex-wrapper'><img alt="P \Leftrightarrow \left( \overline{Q} \Rightarrow R ight)" height="33" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:120px; height:33px" width="120">\(P \Leftrightarrow \left( \overline{Q} \Rightarrow R ight)\)</span></li> <li><span style='position:relative' class='latex-wrapper'><img alt="R" height="16" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:14px; height:16px" width="14">\(R\)</span> <span style='position:relative' class='latex-wrapper'><img alt="\Leftrightarrow \overline{Q}" height="22" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:37px; height:22px" width="37">\(\Leftrightarrow \overline{Q}\)</span></li> <li><span style='position:relative' class='latex-wrapper'><img alt="(R \Rightarrow P) \Rightarrow Q" height="18" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:112px; height:18px" width="112">\((R \Rightarrow P) \Rightarrow Q\)</span></li> <li><span style='position:relative' class='latex-wrapper'><img alt="\left( \overline{Q} \Rightarrow R ight) \Rightarrow P" height="33" loading="lazy" src="https://st.vndoc.com/data/image/blank.png" style="pointer-events: none; position: absolute; width:120px; height:33px" width="120">\(\left( \overline{Q} \Rightarrow R ight) \Rightarrow P\)</span></li> \(\Rightarrow\) Chọn đáp án \(\exists x\mathbb{\in Q}:x^{2} = 2.\) Câu 6. Cho ba mệnh đề: \(P:\) “số \(20\) chia hết cho \(5\) và chia ... + Đọc thêm »
