Am I eligible for MBA admission in TSM with low scores in TANCET and MAT?

If your MAT score is less you can try to perform well in GD and PI , so that you can get through and join tsm. But for TANCET you have to come through counsel-ling and if TANCET seats are over in TSM then only it will be hard. so please do try with your MAT score as soon as possible because the last