Is this necessary to clear CMAT / MAT for MBA? Is graduation score sufficient to pursue MBA?

Yes, you are eligible to apply for MAT. The main eligibility criteria is graduation from a recognised university. Education mode can be regular or correspondence.

There is no age limit for MAT. Candidates who are fresh graduates or working professionals in any phase of their career are eligible for it. So, essentially they must be at least 20 years old.

There is no minimum marks requirement in graduation for MAT, but B Schools have minimum academic criteria of 50% in graduation (45% for Reserved categories) for full time MBA programmes.

No, MAT eligibility is not different for PBT and CBT. Whether the candidate chooses PBT or CBT, they must have completed graduation or be in the final year of Bachelor's degree programme.

MAT scaled score is between 200 to 800. It is arrived at using scores of all the five sections of the exam. Raw scores are coverted into scaled score by applying a standardised formula after with MAT percentile is calculated.