dear friend,
Your 12th marks percentage is very poor.. To get admission in DU you have to fulfill the eligibility criteria first..

Eligibility criteria:-

1.candidate must have secure 75% aggregate in 12th to get admission B.Com course..
This is the only eligibility criteria you have to fulfill.
As you have secure less marks in 12th then you are not eligible for DU ...
It will be better for you to go for some other university..
Hope you got the answer you are looking for thank-you.