Question: What is the problem with the following code? str 1 = Midterm Exam str 1 [ 5 ] = ' t ' It is not

What is the problem with the following code?
str1= "Midterm Exam"
str1[5]='t'
It is not possible to modify a string, as they are immutable.
It should be str1[4:7]='t'
There is no problem.
What is the problem with the following code? str1= "Midterm Exam"

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