Question

Choose the correct options.

The Hindu-Arabic numeral for $\mathrm{CDXXIX}$ is:

• A. $167$
• B. $197$
• C. $107$
• D. $429$

Answer 1

The correct option is D

$429$

Explanation:

To convert the Roman numeral into Hindu-Arabic numeral we should know about values of Fundamental symbols as

$\mathrm{IX}=10-1=9,\mathrm{X}=10,\mathrm{C}=100,\mathrm{D}=500$

Putting values of given Roman numerals and adding them, we get

$\mathrm{CDXXIX}$ $=$$(500-100)+10+10+(10-1)$

$=$$400+20+9$.

$=429$

Hence, Hindu-Arabic numeral for $\mathrm{CDXXIX}$ is $429$, So option (D) is correct.