The most probable reason why the magnets won't stick on the refrigerator is that the body of the refrigerator and the magnets have like poles. If both have negative or both have positive poles facing each other, they will repel. In principle, magnets are attracted to opposite poles and like poles repel.
The tree might get swept away by the current and it will disappear when it catches on something
Answer:
54 is the correct answer to this question