概率题,话说是英文的,
ten people are to be seated at a rectangular table for dinner.Tanya will sit at the head of the table.Henry must not sit beside either Wilson or Nancy.In how many ways can the people be seated for dinner?
我不知道那群人应该怎么坐,THE HEAD OF THE TABLE 指的是什么?还有那个是单面坐还是双面坐?
BUT ANYWAY THANK YOU