a:1:{i:0;a:13:{s:2:"id";s:3:"655";s:7:"answer1";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%7B6%20%5Ccdot%205%20%5Ccdot%20%7B4%20%5Cchoose%203%7D%20%5Ccdot%20%7B4%20%5Cchoose%202%7D%7D%7B24%20%5Cchoose%205%7D" alt="\frac{6 \";s:7:"answer2";s:235:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cfrac%7B6%20%5Ccdot%205%20%5Ccdot%204%5E2%7D%7B24%20%5Cchoose%205%7D" alt="\frac{6 \cdot 5 \cdot 4^2}{24 \choose 5}" /></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%7B6%20%5Cchoose%202%7D%20%20%5Ccdot%20%7B4%20%5Cchoose%203%7D%20%5Ccdot%20%7B4%20%5Cchoose%202%7D%7D%7B24%20%5Cchoose%205%7D" alt";s:7:"answer4";s:247:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cfrac%7B%7B4%20%5Cchoose%202%7D%20%5Ccdot%204%5E2%7D%7B24%20%5Cchoose%205%7D" alt="\frac{{4 \choose 2} \cdot 4^2}{24 \choose 5}" /></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:"1915";}}