The answer to this comes from a process called subtraction which most people learn in their first year of school. There were 25 questions and you got 16 right, so what is left over? 25-16=9. Clearly it was not a math test or you would not have done so well.
You answered 23 questions incorrectly.
66
If all 35 questions were worth the same credit and you got a 75 percent,then you put down the wrong answer for 83/4 questions.
If you missed out 11 AND got all the rest correct you would have 83.08%. However, if you miss out 11 out of 65 it is unlikely that you are good enough to get all the rest correct!
You can't get 90% in a test with 32 questions. However, if calculated the answer would be 3.2. i.e., you would miss 3.2 questions to get 90%. This can happen when the examiner gives you marks even for a partially correct answer.
7.5 questions
You got 38 right.
You answered 23 questions incorrectly.
19
7
66
11
138 questions right and 12 questions wrong
I took a test that had 35 questions. I got a 91%, how many did I miss?
If all 35 questions were worth the same credit and you got a 75 percent,then you put down the wrong answer for 83/4 questions.
To find the percentage of questions you got right, divide the number of questions you got right (3) by the total number of questions (40) and multiply by 100. In this case, the percentage you got right is 7.5%.
You might not have missed any - you just got nearly half of them wrong.