How many possible combinations can a four-wheel lock with 100 positions per wheel have?

A four-wheel combination lock with 100 positions per wheel has 100,000,000 possible combinations.1

This is calculated by raising the number of positions per wheel to the power of the number of wheels:

$${100}^4=100,000,000$$

In these devices, the number of combinations is determined by the number of wheels and the positions available on each, providing a secure form of closure that lacks a traditional keyhole.1