The Hindu number system is much more efficient than the Roman number system because :
(i) Large numbers are written compactly (e.g., 1,000,000), unlike Roman numerals, which become long and clumsy.
(ii) It uses place value, where a digit’s position (units, tens, hundreds) affects its value. Roman numerals lack this.
(iii) It includes zero, both as a number and a placeholder. Roman numerals have no symbol for zero.
(iv) It uses just 10 digits (0–9) to write any number, while Roman numerals need many symbols.
(v) Arithmetic operations are easy using standard rules. Roman operations are complex and often require conversion.