It depends on how many questions there are.
95% of the questions, provided there are no penalties for wrong answers.
1
Provided that all 150 exam questions are weighted equally, then 105 correct responses is 70%.
You can get 20 questions wrong.
You can get up to 150 questions wrong.
5
You can get 63 questions wrong and get 70%.
30
14 of them.
5
37 questions wrong gives you a 70.2% correct.
no more than 7