Question

Does every magnet have necessarily north and south pole

Answer 1

YES EVERY MAGNET HAVE NECESSARILY BOTH NORTH POLE AND SOUTH POLE.

Answer 2

YES EACH MAGNET HAS NECCESSARILY NORTH AN SOUTH POLE.
                                                            THE PROPERTIES OF THESE WERE AS FOLLOWS:         UNLIKE POLE ATTRACT EACHOTHER.
LIKE POLE REPEL EACHOTHER.
                                                    PLZ MARK IT BEST