Question

In Roman numeration, the symbol X can be subtracted from ____, M and C only.

Answer 1

Hint: For solving this question you should know about the values of L, M, and C and all other numbers. Here it is already given that X is subtracted from M and C and we have to find the third number from which X is subtracted. So, for this we will see all right side available nearest numbers and then we will find the value for this.

Complete step by step answer:
According to the question, it is asked to us that, in Roman numeration, the symbol X can be subtracted from ____, M and C only. IN this question use the subtraction rule. The integers are represented by the following letters.
I = 1
V = 5
X = 10
L = 50
C = 100
D = 500
M = 1000
By using the subtraction rule, writing a smaller number left of a large number which means that the smaller number has to be subtracted from the large number. The symbol X which is equal to 10 can be used for subtraction form L and M and C only which is equal to 50, 1000 and 100 respectively. So, the symbol X can be subtracted from L, M and C.
Hence the answer is L.

Note: Before solving this question, we should have to follow all the rules of Roman numerals:
1. If a smaller digit is between two large digits, then it is always subtracted from the right side digit.
2. V, L and D are never repeated.
3. A smaller digit is to be added when it is placed just after the largest digit.
4. The digits V, L, D, M are not subtracted from any digits.
5. The value of the digit increases by 1000 times if the bar is placed over the digit.
6. The left digit of each pair below can be subtracted only once from the right side.