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Question

XXV + XXXV = ?



A

The Vignesh's method is correct.

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B

Gautam's method is correct.

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C

The method used by both of them are wrong.

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D

The method used by both of them are correct.

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Solution

The correct option is B

The Vignesh's method is correct.


In the Roman numerals X = 10, V = 5.
So, XXV = 10 + 10 + 5 = 25
XXXV = 10 + 10 + 10 + 5 = 35
XXV + XXXV = 25 + 35 = 60
60 = LX (In Roman numerals L= 50)
Therefore, XXV + XXXV = LX
 


Mathematics

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