17. Which of the following options is INCORRECT?
A. XL + CVI = 146
B. CD + LXV = 665
C. M-DCL = 350
D. None of these
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The required option is (B).
Step-by-step explanation:
We know that,
X = 10, L = 50, C = 100, D = 500 and M = 1000
Check options:
A. XL + CVI = 146
∴ XL = 40 and CVI = 106
XL + CVI = 40 + 106 = 146, it is correct.
B. CD + LXV = 665
CD = 400 and LXV = 65
∴ CD + LXV = 400 + 65 = 465 ≠ 665, it is incorrect.
C. M - DCL = 350
M = 1000 and DCL = 650
∴ M - DCL = 1000 - 650 = 350, it is correct.
Hence, the required option is (B) "CD + LXV = 665".
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