a:1:{i:0;a:13:{s:2:"id";s:3:"520";s:7:"answer1";s:173:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Csqrt%7B7%7D%2B%5Csqrt%7B5%7D" alt="\sqrt{7}+\sqrt{5}" /></p>";s:7:"answer2";s:171:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Csqrt%7B7%7D-%5Csqrt%7B5%7D" alt="\sqrt{7}-\sqrt{5}" /></p>";s:7:"answer3";s:151:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Csqrt%7B7%7D-2" alt="\sqrt{7}-2" /></p>";s:7:"answer4";s:151:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Csqrt%7B5%7D-2" alt="\sqrt{5}-2" /></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:"0100000000";s:8:"question";s:4:"1780";}}