if I did not mis-taken, from the CCSP exam outline
https://www.isc2.org/-/media/ISC2/Certifications/Exam-Outlines/CCSP-Exam-Outline.ashx
Total number of question is 125 (not 120). I started to understand your thinking when I am typing/editing.
May I ask you to think in another perspective, how to get yourself a positive pass? How many questions you need to get them correct in order to get a "sure" pass?
Also, there are saying (or rumours) that 25 are experimental and does not count, however, I don't see any official documentation on this and even it's yes, so you don't know exactly which 25 are experiential. (worst case you got these 25 all right, then you still need to score another 70 questions correct to get a pass). So under this assumption, worst case senerio, you need to have 95 question correct in order to have a "sure" pass.
So if you ignore these 25 experimental or not, and consider 125 as a whole.
To pass, you need to score 700 out of 1,000. Assume all question is equally weight (this assumption may not be correct as well, because it's not stated all questions are equally weight), which mean you should get 70% 125*0.7= 87.5 question (say 88 question) right or you get more than 30% 125*0.3= 37.5, ~38 question.
So if you are getting more 38 questions incorrectly, likely you won't able to pass. (not mention 50 and when you mention 50, you are assuming the questions you answer incorrectly, most of them are "experimental" and does not count).
Franky for a safe pass, by the above simple calcuation, you should be getting more 90 questions (95 is even better) correct and should not miss more than 35 questions. (or don't miss 30 question is even better).
So up this point, I think you may realise what's the potential problem.
John
