Numbers Greater 681C7D
1. **Problem statement:** Rudolf has four digits that can form the number 2025. He wants to know how many different numbers greater than 2025 can be made using these digits.
2. **Digits involved:** The digits are 2, 0, 2, and 5.
3. **Total permutations:** Since there are repeated digits (two 2's), the total number of distinct permutations is given by the formula for permutations of multiset:
$$\frac{4!}{2!} = \frac{24}{2} = 12$$
4. **List all permutations:** The distinct numbers formed are:
- 0225 (invalid as leading zero)
- 0252 (invalid as leading zero)
- 2025
- 2052
- 2205
- 2250
- 2502
- 2520
- 5022
- 5202
- 5220
5. **Exclude numbers with leading zero:** 0225 and 0252 are not valid four-digit numbers.
6. **Count numbers greater than 2025:**
- 2025 (equal, not greater)
- 2052 (greater)
- 2205 (greater)
- 2250 (greater)
- 2502 (greater)
- 2520 (greater)
- 5022 (greater)
- 5202 (greater)
- 5220 (greater)
There are 8 numbers greater than 2025.
**Final answer:** Rudolf can make **8** different numbers greater than 2025 using the digits 2, 0, 2, and 5.