mysql> select id, count(question_id) from question_choice group by question_id  having count(question_id) > 30;
+-------+--------------------+
| id    | count(question_id) |
+-------+--------------------+
|    11 |                240 |
|  3300 |                240 |
|  6589 |                241 |
|  9879 |                240 |
| 13170 |                240 |
| 16459 |                240 |
| 19748 |                240 |
| 23037 |                238 |
| 26324 |                238 |
| 29611 |                240 |
| 32900 |                241 |
| 36190 |                240 |
| 39479 |                240 |
| 42768 |                228 |
| 46045 |                240 |
| 49334 |                240 |
+-------+--------------------+
16 rows in set (0.34 sec)