CA Foundation Exam:
The CA Foundation Exam is conducted by the Institute of Chartered Accountants of India (ICAI). It is the entry-level examination for students who wish to pursue a career in chartered accountancy. The exam consists of four papers, each covering different subjects.

Paper-wise Marks Distribution:

1. Paper 1: Principles and Practices of Accounting
- This paper is divided into two parts: Part A (Accounting) and Part B (Mercantile Law).
- Part A carries a weightage of 60 marks, while Part B carries a weightage of 40 marks.
- The total marks for this paper are 100.

2. Paper 2: Business Laws and Business Correspondence and Reporting
- This paper consists of two parts: Part A (Business Laws) and Part B (Business Correspondence and Reporting).
- Part A carries a weightage of 60 marks, while Part B carries a weightage of 40 marks.
- The total marks for this paper are 100.

3. Paper 3: Business Mathematics and Logical Reasoning & Statistics
- This paper is divided into two parts: Part A (Business Mathematics and Logical Reasoning) and Part B (Statistics).
- Part A carries a weightage of 40 marks, while Part B carries a weightage of 60 marks.
- The total marks for this paper are 100.

4. Paper 4: Business Economics and Business and Commercial Knowledge
- This paper is divided into two parts: Part A (Business Economics) and Part B (Business and Commercial Knowledge).
- Part A carries a weightage of 60 marks, while Part B carries a weightage of 40 marks.
- The total marks for this paper are 100.

Total Marks:
- The total marks for the CA Foundation Exam are 400, with each paper carrying 100 marks.
- The marks obtained in each paper are added together to calculate the overall score of the candidate.

Passing Criteria:
- In order to pass the CA Foundation Exam, a candidate must obtain a minimum of 40% marks in each paper and a minimum of 50% marks in aggregate (i.e., the total marks of all papers combined).

Conclusion:
The CA Foundation Exam consists of four papers, each carrying 100 marks. The marks distribution varies for each paper, with some papers having equal weightage for different subjects. It is important for candidates to understand the weightage of each paper and prepare accordingly to achieve a good score.