a:1:{i:0;a:13:{s:2:"id";s:3:"659";s:7:"answer1";s:229:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cfrac%7B5%20%5Ccdot%203%20%5Ccdot%204%7D%7B12%20%5Cchoose%203%7D" alt="\frac{5 \cdot 3 \cdot 4}{12 \choose 3}" /></p>";s:7:"answer2";s:231:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cfrac%7B5%5E3%20%2B%203%5E3%20%2B%204%5E3%7D%7B12%20%5Cchoose%203%7D" alt="\frac{5^3 + 3^3 + 4^3}{12 \choose 3}" /></p>";s:7:"answer3";s:250:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cfrac%7B%7B5%20%5Cchoose%203%7D%20%2B%20%7B3%5Cchoose%203%7D%20%2B%20%7B4%5Cchoose%203%7D%7D%7B12%20%5Cchoose%203%7D" alt="\frac{{5 \choos";s:7:"answer4";s:250:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cfrac%7B%7B5%20%5Cchoose%203%7D%20%5Ccdot%20%7B3%5Cchoose%203%7D%20%5Ccdot%20%7B4%5Cchoose%203%7D%7D%7B12%20%5Cchoose%203%7D" alt="\frac{{";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:"0010000000";s:8:"question";s:4:"1919";}}