hey,

i hope you are doing well , see the thing is that no evaluator or checker want their students to get failed in any of the subjects, they do try their best to get you passed,but if have not written anything right or related to the question asked then how could someone pass you , mathematics is not related with theory subjects as in theory subject we comparatively get passed because evaluator may give 1 or 2 mark extra on your answer to get us pass, but that is not same in mathematics, in mathematics you may be awarded  by mark for every correct answer and not a single mark for wrong answer or wrong step.

if you are confident that you have done correct of 23 marks and some of the questions you attempted and left incompleted but your steps are somehow correct then there might be a chance that your 23 marks will become 26 then you will get pass.

hope this helps!

i wish very good luck to you.