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Question

The decimal form of roman numeral XLII is

A
42
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B
39
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C
52
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D
62
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Solution

The correct option is A 42
We know that, L = 50 and X = 10.
If a lesser roman number is written towards the left of bigger roman numbers, that number to be subtarcted..
So, XL = 40

XLII = XL + II
= 40 + 2
= 42
Hence decimal form of XLII is 42.

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