The system of Roman numerals is numeral system used by the ancient Romans.
Roman numerals are the symbols used by the ancient Romans to represent numbers.
Following are the basic symbols and the numbers they represent in the Roman numeral system:
I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000.
The other numbers in the Roman numeral system are obtained by placing these basic symbols beside each other.
For Example, XV = 10 + 5 = 15
IX = 10 - 1 = 9
VI = 5 + 1 = 6
A. 3
B. 9
C. 10
D. 4
Correct Answer: D
Step 1: Considering choice A, 4 = 5 - 1 = IV
Step 2: Considering choice B, 3 = 1 + 1 + 1 = III
Step 3: Considering choice C, 9 = 10 - 1 = IX
Step 4: Considering choice D, 10 = X
Step 5: So, the number that can be represented as a Roman numeral using the letters V and I is 4.