Question

In how many ways can 5 identical rings can be worn on 4 fingers?

Answer 1

The fingers are fixed in this case. Hence, it is the base. Now keeping in mind this picture of fixed fingers, think of the first ring. The first ring can be put in any of the 4 fingers. Similarly the next and the next and so on. This 4 × 4 × 4 × 4 ×4 =4^5 = 1024.