If you're a Biology-Computer Science stream student in Class 12 and want to pursue a B.Sc Economics with Statistics without having taken Maths or Economics in 12th, you can consider colleges that offer admission based on your overall percentage in the science stream, and might not strictly require those subjects. Here are a few universities to explore:

You can consider Delhi University some colleges under Delhi University like the "Department of Economics" might consider your overall percentage in the science stream for admission to B.Sc Economics with Statistics,

Candidates coming from science background and who does not studied economics as a main subject in class 12 then 2 % will be deduct from their percentage in delhi University colleges like SRCC , LSR , HINDU , HANSRAJ and STEPHENS % they take admission on 12gh qualifying marks which is more than 98 percent.

You can also go for other options University of Hyderabad,University of Mumbai, Jadavpur University,amu etc.

work hard ....!! best of luck...