a:1:{i:0;a:13:{s:2:"id";s:3:"498";s:7:"answer1";s:203:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=a%3D%5Cfrac%7B1%7D%7B2%7D%2C%5C%20b%3D%5Csqrt%7B2%7D" alt="a=\frac{1}{2},\ b=\sqrt{2}" /></p>";s:7:"answer2";s:205:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=a%3D-%5Cfrac%7B1%7D%7B2%7D%2C%5C%20b%3D%5Csqrt%7B2%7D" alt="a=-\frac{1}{2},\ b=\sqrt{2}" /></p>";s:7:"answer3";s:223:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=a%3D%5Csqrt%7B2%7D%2C%5C%20b%3D%5Cfrac%7B%5Csqrt%7B2%7D%7D%7B2%7D" alt="a=\sqrt{2},\ b=\frac{\sqrt{2}}{2}" /></p>";s:7:"answer4";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%3D-%5Csqrt%7B2%7D%2C%5C%20b%3D%5Cfrac%7B%5Csqrt%7B2%7D%7D%7B2%7D" alt="a=-\sqrt{2},\ b=\frac{\sqrt{2}}{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:"1000000000";s:8:"question";s:4:"1758";}}