解法一:                                                                                                                                    原解法方向正确,但因首先入座者可改变座位,成为不同的坐法,故整个问题的解为                                                                                                                                                   8!2!-7!2!2!=7!2!× 6                                                                                                  解法二：

将夫妻二人看成一人与不受限制的5人及不和中任一人任意入座有7！坐法.在一起的夫妻2人有2！坐法,不和2人中另一人入座上述任一坐法，但与不和者分开，有6种坐法,故总共有7！2!×6种坐法.