Hey,

Yes you an secure admission in the colleges of du but won't be able to make it in top colleges namely the north campus colleges as the cutoffs there be likely be above 90%. Also, it too depends on the category you belong to. A general category  candidate will have lesser chances to grab a seat than a reserved category student in du. You may check the previous years cutoffs on the official website to get an idea about the cutoffs and colleges you may likely to get.