hello,

If you want to appear for btech and barch you can take the advantage by attempting 4 chance in a year separately. There will be no reduction for the jee mains because in order to take part in both you need to fill the application and there you have to opt for paper 1 and paper 2 along with the appicable fee you need to give for both the paper. The candidates are given 4 attempts separately for both paper 1 and paper 2.

hope this will help you

all the best!!