If I apply to 10 undergraduate schools what're the odds I get into AT LEAST ONE?

Let’s keep it simple. Let’s say I’m interviewing for an accounting position at some top CPA firms with many applicants.

Are my odds of gettIng a job the exact same if I apply to only 1 firm or if I apply to 10 firms?

I think we would all say that by applying to 10 firms will increase my odds (even if only slightly) of getting a job offer by at least one firm.