a:1:{i:0;a:13:{s:2:"id";s:3:"488";s:7:"answer1";s:225:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=A%20%5Csetminus%20C%20%3D%20%5C(-1%3B0%5C)%5Ccup%20%5C(0%3B1%5C)" alt="A \setminus C = \(-1;0\)\cup \(0;1\)" /></p>";s:7:"answer2";s:191:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=A%20%5Csetminus%20C%20%3D%20%5C(-1%3B1%5C)" alt="A \setminus C = \(-1;1\)" /></p>";s:7:"answer3";s:195:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=A%20%5Csetminus%20C%20%3D%20%5C%7B-1%2C1%5C%7D" alt="A \setminus C = \{-1,1\}" /></p>";s:7:"answer4";s:201:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=A%20%5Csetminus%20C%20%3D%20%5C%7B-1%2C0%2C1%5C%7D" alt="A \setminus C = \{-1,0,1\}" /></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:"1000000000";s:8:"question";s:4:"1748";}}