Question

Write the following Roman Number in Hindu - Arabic Number.
${\text{LXXXI}}$ = _________

Answer 1

Hint: To find the value of the given roman number, we compute its value by adding the values of its individual numbers and represent the answer in Hindu - Arabic form.

Complete step-by-step answer:
We use Roman numerals for conversion,
We know in roman numerals the alphabets L, X and I represent
 I = 1, X =10, L =50 respectively.

Therefore,
LXXXI = L + X + X + X + I
           = 50 + 10 + 10 + 10 + 1
           = 81

Hence, LXXXI = 81 in Hindu – Arabic number.

Note – The key in such problems is knowing the concepts of Roman numerals and Hindu – Arabic numbers.
Hindu-Arabic numerals are the set of 10 symbols—1, 2, 3, 4, 5, 6, 7, 8, 9, 0 that represent numbers in the decimal number system.
Numbers in the Roman numeral system are represented by combinations of letters from the Latin alphabet.