EXERCISE

Write the Hindu-Arabic numeral for the following: $\mathrm{DCCCIX}$

Write the Hindu-Arabic numeral for the following: $\mathrm{CMV}$

Is $\mathrm{XLV}$  a valid Roman numeral representation. Give reason for your answer.

Is $\mathrm{VL}$  a valid Roman numeral representation. Give reason for your answer.

Is $\mathrm{IC}$  a valid Roman numeral representation. Give reason for your answer.

Is $\mathrm{XCIV}$  a valid Roman numeral representation. Give reason for your answer.

Is $\mathrm{LIV}$  a valid Roman numeral representation. Give reason for your answer.

Is $\mathrm{LLC}$  a valid Roman numeral representation. Give reason for your answer.