Who was the self-taught Indian mathematical genius in the 20th century?

Options

A. Aryabhatta
B. Sridharacharya
C. Srinivasa Ramanujan
D. Harish Chandra

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the name of a self-taught Indian mathematical genius from the 20th century.

2. **Review the Options**: The options given are:
- Aryabhatta
- Siddhacharya
- Srinivasa Ramanujan
- Harish Chandra

3. **Analyze Each Option**:
- **Aryabhatta**: An ancient Indian mathematician and astronomer, known for his work in the 5th century, not the 20th century.
- **Siddhacharya**: Refers to a group of mathematicians and not a specific individual known for self-taught genius in the 20th century.
- **Srinivasa Ramanujan**: A prominent mathematician who was largely self-taught and made significant contributions to mathematical analysis, number theory, and continued fractions in the early 20th century.
- **Harish Chandra**: A mathematician known for his work in representation theory, but he was not primarily recognized as a self-taught genius.

4. **Determine the Correct Answer**: Based on the analysis, Srinivasa Ramanujan stands out as the self-taught mathematical genius of the 20th century.

5. **Conclusion**: The correct answer is **Srinivasa Ramanujan**.

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