Practice30Create account

Karan needs to write 90 and explains: 'I will put L before C because 100 - 50 = 50... no, I will put X before C.'
Which rule makes XC the correct way to write 90?

Class 6Roman NumeralsNumbers
  • AX may be subtracted from L and C
  • BL may be subtracted from C
  • CAny smaller symbol may be subtracted from any larger one
  • DV may be subtracted from C

Step-by-Step Solution

Only I, X and C are used for subtraction. X can be subtracted from L (XL = 40) and from C (XC = 90). V and L are never subtracted.
Answer: A) X may be subtracted from L and C

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Roman Numerals practice questions

More Class 6 Roman Numerals practice

Vivek lists all whole numbers from 1 to 12 whose Roman numeral uses exactly three…A history book gives the reign of a king as MCDXCIII to MDXX. For how many years did the…This clock has Roman numerals instead of digits. What time does it show?The foundation stone of the town library shows a year in Roman numerals. In which year…The matchstick equation in the picture is wrong. Which equation can you get by moving…