Dear applicant,

in most of the exams, if you do not press SAVE option, the answers are counted. But, there are instructions given on the screen just before the exam starts. Read them carefully and work accordingly. If a question is under review(opted by you), in major cases, the answer you gave(even if not saved) is taken into account cause in the end in most of the cases you do press save button before submitting.

Hope it helps.

All the best for your future endeavours!