Request for help in probability question.

#1
There are 50,000 applicants out of which, 20,000 applicants needs to be picked.

1. What is the probability that an applicant say "Joel" is picked from the pool of 50,000 in order to be in the shortlisted pool of 20,000?

2. What is the probability that applicants either "Joel" or "Sarah" is picked from the pool of 50,000 in order to be in the shortlisted pool of 20,000?

Thank you...
 
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