a:1:{i:0;a:13:{s:2:"id";s:3:"592";s:7:"answer1";s:166:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5C%3C%206%3B%20%5Cinfty)" alt="\&lt; 6; \infty)" /></p>";s:7:"answer2";s:164:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=(-%5Cinfty%3B6%20%5C%3E" alt="&quot;(-\infty;6" /></p>";s:7:"answer3";s:145:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cemptyset" alt="\emptyset" /></p>";s:7:"answer4";s:143:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5C%7B0%5C%7D" alt="\{0\}" /></p>";s:7:"answer5";s:0:"";s:7:"answer6";s:0:"";s:7:"answer7";s:0:"";s:7:"answer8";s:0:"";s:7:"answer9";s:0:"";s:8:"answer10";s:0:"";s:4:"good";s:10:"0001000000";s:8:"question";s:4:"1852";}}