Can I get into SSCBS with 15 days of preparation and 81% in class 12 boards ? I also want to know if the test will be taken in online mode?

The University of Delhi annually conducts Delhi University Joint Admission Test (DU JAT), for the purpose of shortlisting students for admissions to undergraduate management programmes at Delhi University’s affiliated institutes. DU JAT 2018 will be conducted on June 17, 2018 in an online or computer-based mode between 4PM to 6PM. The application process has commenced from May 15, 2018 and continue until Thursday, June 7, 2018 (6 PM). Candidates who will successfully fill the application form can download the DU JAT 2018 admit cards tentatively from the month of June, 2018. The total duration of the test is two hours; conducted across 18 cities in India.

The General Category candidate should secure an aggregate of atleast 60% marks in his/her XII class examination in four papers including English, Mathematics and other two subjects from the list of elective subjects as approved by University of Delhi.

15 day preparation is subjective, depends upon you in depth knowledge. As per my suggestion, more preparation and brushing up on concepts is required and 15 days are not sufficient.