Hello , 

As your query is you want to know about the cut off marks of B.Sc Mathematics, Botany, Zoology Honours all together. I would like to tell you that you haven't mention about the college you are looking forward to take admission or even you haven't mention the states that you belong to where you want to take admission since the details are not with me so I can't help you in that that depth but yes in my opinion and the details that we have if you want to go for the best colleges for Honours in Mathematics, Botany, Zoology Honours you need to score at least or more than 80% to 85% in your 12th boards then only you are eligible for the best colleges of your area.

Further, if you can let me know about the college or the state you are looking forward to take admission in we will definitely help you with that in much weight at.

I hope your query is solved.

Thank you.