Assuming each question is worth 1 mark, 78% of 32 = 78/100 × 32 = 24.96
As it is unlikely that you will get 0.96 of a question/mark, you will need to get 25 questions right to guarantee getting 78% - you will actually get 78⅛ % which would be rounded to 78% to the nearest whole percentage.
If all the questions are worth the same score then you cannot get 78% on a 32 question test.
You can miss 10% of questions, or 12 questions
To get exactly 90% you need to miss 5.6 questions.
22 questions
35
6 of them.
You can miss 10% of questions, or 12 questions
To get exactly 90% you need to miss 5.6 questions.
.8 x 30 = 24 so you can miss 6 questions
22 questions
35
24 of them.
6 of them.
40
Providing that all the other questions are correct then it is 9 questions
No more than 15.But why miss any ?
25 questions missed
Just one question, and I reckon it was the question about percentages!