(1) -> M:=matrix [[2, 9, 4], [7, 5, 3], [6, 1, 8]]

        +2  9  4+
        |       |
   (1)  |7  5  3|
        |       |
        +6  1  8+
                                                        Type: Matrix(Integer)
(2) -> determinant M

   (2)  - 360
                                                                Type: Integer
(3) -> permanent M

   (3)  900
                                                        Type: PositiveInteger