Three interviewers, X, Y, and Z are interviewing 40 applicants

Three interviewers, X, Y, and Z are interviewing 40 applicants. Only with three interviewers' admission can an applicant be admitted. If interviewer X admitted 15 applicants, Y admitted 17 applicants, and Z admitted 20 applicants, at least how many applicants get the admission?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #80163