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Directions: Find the missing digit. X + XX = ___
  • a)
    IV
  • b)
    L
  • c)
    XXX
  • d)
    M
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Directions: Find the missing digit. X + XX = ___a)IVb)Lc)XXXd)MCorrect...
X represents the number 10 in Roman numerals.
XX represents 20 in Roman numerals.
Adding these together: 10 + 20 = 30.
In Roman numerals, 30 is written as XXX.
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Community Answer
Directions: Find the missing digit. X + XX = ___a)IVb)Lc)XXXd)MCorrect...
Understanding Roman Numerals
Roman numerals are an ancient number system that uses combinations of letters from the Latin alphabet. Here, we are dealing with the following symbols:
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- M = 1000
Breaking Down the Equation
The equation presented is:
X + XX = ___
Let's translate this into numbers:
- X = 10
- XX = 20
Now, we add them together:
10 + 20 = 30
Finding the Roman Numeral for 30
Next, we need to determine the Roman numeral for the sum, which is 30.
- Roman numeral for 30 is represented as XXX (since X = 10, and three X's add up to 30).
Evaluating the Options
Now, let’s look at the options given:
- a) IV = 4
- b) L = 50
- c) XXX = 30
- d) M = 1000
Among these, the only option that matches our calculated value of 30 is:
- c) XXX
Conclusion
Therefore, the missing digit in the equation X + XX is:
- Correct answer: option 'C' (XXX)
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