There are 66 seats on a bus. If the bus leaves empty, there will be one passenger on the first stop, two passengers on the first stop, three passengers on the third stop, and so on. , the car is full of passengers?
一辆公共汽车上有66个座位，空车出发，第一站上一位乘客，第一站上两位，第三站上三位，依此类推，若无人下车，第几站后，车上坐满乘客？
<result>11</result>