Roman Numerals

Q: In Roman Numeration, the symbol \$X\$ can be subtracted from ______, \$M\$ and \$C\$ only.

In Roman Numeration, \$X\$ stands for \$10\$\$L\$ stands for \$50\$\$C\$ stands for \$100\$\$M\$ stands for \$1000\$So, in Roman Numeration, the symbol \$X\$ can be subtracted from \$\boxed{L}\$, \$M\$ and \$C\$ only.

Q: Write the following Roman numerals in the Hindu-Arabic system.a) IV b) IX c) XIId) XVI e) XXX f) XLg) XXV h) XLI i) XLI

\$a) IV = 4 \$ \$b) IX = 6\$ \$c) XII = 12\$\$d) XVI =16\$ \$e) XXX = 30 \$ \$f) XL = 40\$\$g) XXV = 25\$ \$h) XLI = 41\$ \$i) XLI =41\$

Q: The symbol that can never be repeated is

The double of \$V (5)\$ in Roman numerals will be \$X (10)\$So only \$V\$ is the symbol that cannot be repeated.

Q: Write the following Roman numerals in ascending order:\$CXIX,\,XCIX,\,CXXI,\,CIX,\,CXX\$

Converting the given Roman numbers to decimal numbers:\$CXIX=100+10+9=119\$\$XCIX=90+9=99\$\$CXXI=100+21=121\$\$CIX=100+9=109\$\$CXX=100+20=120\$Now, arranging these numbers in ascending order:\$99<109<119<120<121\$\$\therefore\ XCIX<CIX<CXIX<CXX<CXXI\$ is the ascending order of the given Roman numbers.

Q: In Roman numeration, if a symbol is repeated, its value is multiplied as many times as it occurs.

It is a false statement.In Roman Numeration, if a symbol is repeated, its value is added as many times as it occurs.

Q: State true or false:\$XXIX=31\$

The roman numeral, XXIX can be written asXXIX = X + X + IX \$= 10 + 10 + 9\$ \$= 29\$So the given roman numeral is a representation of \$29\$, not \$31\$\$\therefore\$ \$\textbf{The given statement is false}\$.

Q: Which of the following numbers in Roman numerals is incorrect?

According to the rules of writing Roman numerals, L can be used only once. So LLX is not a correct representation of roman numeral\$\therefore\ \textbf{Option D is correct}\$

Q: Numerals that can be repeated in Roman system are

V can be used once in the Roman systemSimilarly, L and D can be used only once in the Roman SystemBut I, X and C can be repeated in the Roman system to represent certain number.Thus, the numerals that can be repeated in Roman system are I, X and C.