What is the likelihood of a 24 yr old female experiencing sudden hearing loss?

Can occur: But in this age group most likely cause to much ear wax concluding canal. Provided to major trauma such as extremely loud noise etc. Would definitely see physician to confirm or exclude. If not wax then further evaluation must be performed by ear nose and throat specialist.

Depends: If you are talking about hearing loss related to things like ear wax or fluid behind the ears, teh likelihood is very high. If you mean true inner ear hearing loss of sudden onset, its incidence is 1 in 10, 000.