Final answer:
Michael Jordan wore the number 45 when he returned to the NBA for the end of the 1994-1995 season. He chose this number as a representation of his minor league baseball career but later switched back to his legendary number 23.
Step-by-step explanation:
When Michael Jordan came out of retirement for the end of the 1994-1995 NBA season, he wore jersey number 45. Jordan, who originally retired before the 1993-1994 season, had worn number 23 for the majority of his career with the Chicago Bulls. However, upon his return, he chose to wear number 45, the same number he wore during his brief minor league baseball career. He later returned to his iconic number 23 during the playoffs of the same season.