Final answer:
The total number of possible sequences for processing four products on three machines is 24, which is the result of calculating the factorial of the number of products.
Step-by-step explanation:
The question asks for the total number of possible sequences in which four products can be processed on three machines. To find the answer, we need to calculate the factorial of the number of products, which is 4! (four factorial). Four factorial is calculated as 4 x 3 x 2 x 1, which equals 24. Therefore, there are 24 different sequences in which the four products can be processed.