Question

1. Which of the following numbers in Roman numerals is incorrect?
(a) LXII
(b) XCI
(c) LC
(d) XLIV

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Answer 1

$\underline {\pink{ Rules :}}$

Rule 1:

if symbol is repeated , it's value is added.

Rule 2:

No symbol is repeated more than 3 times .

Rule 3:

If smaller value symbol is written to right of greater value symbol, it's value gets added.

Rule 4:

If the symbol of smaller value is written to the left of greater value ,it's value gets subtracted.

$I = 1 , V = 5, X = 10, L = 50, C = 100$

$500 = D , \:and \: 1000 = M$

$a) LXII$

$= 50 + 10 + 1 + 1$

$= 62 \: \green { ( Correct )}$

$b) XCI$

$= ( 100 - 10 ) + 1$

$= 90 + 1$

$= 91 \: \green { ( Correct )}$

$c) LC$

$= 100 - 50$

$= 50 \: \red{ ( Incorrect )}$

/* We can write L = 50 */

$d) XLIV$

$= (50-10) + (5-1)$

$= 40 + 4$

$= 44 \: \green { ( Correct )}$

•••♪

Answer 2

LC IS INCORRECT

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