If you answer all the questions after reading all of them, you could only get only question 100 wrong and get the other 99 correct, so reach a score of 99/100.
If you answer only questions 1 and 2, you get the answer to 100 right too, so you could score 3/100.
In the latter case, you could score 3/3 too, depending on how the examiner decides to mark it.
If you answer all the questions after reading all of them, you could only get only question 100 wrong and get the other 99 correct, so reach a score of 99/100.
If you answer only questions 1 and 2, you get the answer to 100 right too, so you could score 3/100.
In the latter case, you could score 3/3 too, depending on how the examiner decides to mark it.
So which is it?