You can miss 10% of questions, or 12 questions
20
To get exactly 90% you need to miss 5.6 questions.
22 questions
35
You can miss 10% of questions, or 12 questions
1400.
Eight of them.
20
To get exactly 90% you need to miss 5.6 questions.
22 questions
35
24 of them.
6 of them.
40
No more than 15.But why miss any ?
25 questions missed