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Anonymous
CM The rule is that when a smaller value appears before a larger one it must be subracted from that larger one, not added to what goes before, so MCM is 1000 plus 900 =1900
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The Roman numeral which represents the number 900 is CM
900 = CM
(CM) = 900*1000 = 900,000
900
955 in Roman numeral = CMLVCM=900 L=50 V=5