As you have already done Bachelor of Business Administration then you should go for only LLB. This is because bba.llb is pursued after the 12th class. And it takes 5 years  for completing BBA LLB. But if we talk about only LLB which you can do after graduation only then it takes only three years for completing. In BBA LLB integrated course the subjects comprises of BBA and LLB and you have already studied about BBA so there is no need to study again. According to me you should do only LLB for the purpose of getting meaningful knowledge and save time.

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