To find the mode in a given set of numbers, we need to determine which number appears most frequently.
Let's consider the set of numbers: 300, 400, 400, 600, 800.
1. List the numbers and their frequencies:
- 300 appears 1 time.
- 400 appears 2 times.
- 600 appears 1 time.
- 800 appears 1 time.
2. Identify the number with the highest frequency:
- 300: 1 time
- 400: 2 times
- 600: 1 time
- 800: 1 time
3. Conclusion:
- The number 400 appears most frequently, with a count of 2.
Therefore, the mode of the set of numbers is 400.
The correct answer is: 400
