French phrase
Combien de personnes sont nécessaires pour ~ ?
Meaning
How many people are needed to ___?
When to use it
Asks how many people are needed for a task. It is useful when planning an event or meal and has a polite tone.
Example dialogue
Combien de personnes sont nécessaires pour préparer un dîner pour 10 personnes ?
How many people are needed to prepare dinner for 10 people?
Il nous faut trois personnes.
We need three people.