Since you completed Class 10 from Karnataka and Class 12 from Maharashtra, you can apply for both Karnataka CET and Maharashtra CET, but eligibility depends on the specific rules of each exam. Generally, Maharashtra CET gives preference to students who have passed Class 12 from Maharashtra, while Karnataka CET focuses more on domicile and study criteria. You should carefully check the official eligibility conditions of both CETs before applying, but yes, applying to both is possible if you meet their requirements.