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Question:1 A program that computes final averages for a set of grades,The program reads the grades from a user. The format: N grades1, grades2, .
Question:please the code should be in C# (C SHARP)
1.1 A program that computes final averages for a set of grades,The program reads the grades from a user.
The format: N grades1, grades2, ............., grade5. N is total number of grade of ith score. between 0 and 100.
Calculate and display the average.
The weighted average is computed as:
NB: Your program should validate its input. That is, score is between 0 and 100 If a student's grades are invalid, the program should display an error message.
1.2 Extend 1.1 so that the program also determines a final letter grade.
AVERAGE LETTER GRADE
0-59 F
60-69 D
70-79 C
80-89 B
90-100 A
