Question

Three different cars are available to take 4 men and 1 woman on a particular journey. In how many different ways can the five people be allocated to the cars so that the woman is alone?

Answer 1

There does not seem to be enough details but you i would say these are a few:
Car1-Woman, Car2-one man, Car3- 3 men
Car1- 2 men, Car2- 2 men, car3 -woman
Car1- none, Car2- 4 men, car3- woman
You will have 3 in total

Answer 2

1. 2 men, 2 men, woman
2. 3 men, 1 man, woman
3. 4 men, woman

So 3