Q104 of 107 Page 104

Follow the directions and correct the given incorrect equation, written in Roman numerals:

(a) Remove two of these matchsticks to make a valid equation:



(b) Move one matchstick to make the equation valid. Find two different solutions.


(a) Given, IX – VI = V


According to the question we have to remove two matchsticks to make a valid equation.


Hence, X – V = V


⇒ 10 – 5 = 5


(b) Given, VI – IV = XI


According to the question, we have to move one matchstick to make a valid equation.


(i) VI + IV = X


⇒ 6 + 4 = 10


(ii) VI + V = XI


⇒ 6 + 5 = 11


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