You got 89 percent. Hence, you answered 89/100*150 = 133.5 questions.
hence you missed 150 - 133.5 = 16.5 questions.
Eight of them.
Four questions.
66
You answered 23 questions incorrectly.
not more than 15
You will have scored 80 out of 150 thus answered 70 questions incorrect.
You can miss 10% of questions, or 12 questions
1400.
7.5 questions
Eight of them.
3 out of 10
33
20
Four questions.
19
66
22 questions