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11. Which of the following are not meaningful?

(b) XXXI
(a) VXXIX
(C) XLIV
12. Write 'Divide the difference of 91 and 7 by 6' using brackets and solve.
(d) CXCLXV

User Greg Beech
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The answer to question 11 is (d) CXCLXV. Roman numerals are not meaningful when they are repeated more than three times.

The answer to question 12 is [(91 - 7) ÷ 6] = 14.
User Den Kasyanov
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