5. A combination lock has 50 numbers on it. To open it, you tum it counterclockwise to the 1ª number, then clockwise to the 2nd number, then lastly counterclockwise to the 3rd number. Repetitions are...

Extracted text: 5. A combination lock has 50 numbers on it. To open it, you tum it counterclockwise to the 1ª number, then clockwise to the 2nd number, then lastly counterclockwise to the 3rd number. Repetitions are allowed. How many possible combinations are there? 6. The winning number for a certain lottery is 5 digits long and is determined by randomly selecting balls that are numbered 1 through 40. Note that once a ball is picked, that number cannot be repeated, but the order does matter. What are the odds of winning this lottery?