Answer: 78125 ways
Explanation:
Given : The number of possible grades = 5
The number of students in the class = 7
Then, the number of ways to assign grades to a class of seven students :_
![5* 5* 5* 5* 5* 5* 5=5^7=78125](https://img.qammunity.org/2020/formulas/mathematics/college/jts4u1g7eixe1bseui57nqk800e2s2y1tv.png)
Hence, there are 78125 ways to assign grades to a class of seven students .