Explore a popular interview riddle asked at top tech companies and investment banks in this 16-minute video tutorial. Learn how to solve the problem of determining how many times clock hands overlap in a day and at what specific times. Discover four different solution approaches, starting with the problem statement at 0:00, followed by the answer at 3:03. Dive into solution 1 at 6:02, solution 2 at 7:46, solution 3 at 10:10, and solution 4 at 12:45. Gain valuable insights into problem-solving techniques and mathematical reasoning that can help you prepare for challenging interview questions.