Before dawn Josh hurriedly packed some clothes for a job-interview trip while his roommate was still sleeping. He reached in his disorganized sock drawer where there were M black socks and M navy blue socks, although they appeared to be the same color in the dimly lighted room. Josh grabbed N socks, and with no time to spare, he then raced to the airport to catch his plane. a. What is the probability that Josh packed at least A black socks so that he will be dressed appropriately the day of his interview? b. What is the probability that Josh packed at least B black socks so that he will be dressed appropriately the latter day of his trip as well? Solution.