hey,

i hope you are well

yes you can pursue BBA course right after your 12th as the basic eligiblity for getting admission in BBA course is candidate must have passed 12th grade from a recognised board with the stream either commerce or science ,however some colleges may ask for your 50 percent marks in the qualifying exam but it may vary institute to institute , the age criteria is 17 to 25 years

good luck!

Yes, you can definitely do BBA after your 12th even you are from Science Stream. I have personally seen various Students or my Friends going for BBA in various colleges after having 90+% in 12th Boards.

The only problem you will face will be in Accounts but that too will be sorted after a little efforts and he;p from the Professors and friends.