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Question
Follow the directions and correct the given incorrect equation, written in Roman numerals:
Remove two of these matchsticks to make a valid equation:
Solution
Given, 
According to the question, we have to remove two matchsticks to make a valid equation.
Hence, 
......[In numerical system]
⇒ 10 – 5 = 5
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For riddle answer: substitute the number for the letter it equals
`()/1 ()/2 / ()/3 ()/4 ()/5 ()/6 ()/7 ()/8/()/4 ()/9`
