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Several immediately apparent weaknesses of the system are:

1. Roman numerals are designed for recording only whole number data. The have no decimal portion.

2. They are very difficult to manipulate for any mathematical operations. Adding and subtracting are hard, multiplying and dividing require comple tracking charts.

3. Although mainly a base 5 system the powers of 5 are not obvious from inspection (5=V, 10=X, 50=L)

4. There is no zero

5. Alternative representations of numbers exist (4 can be IV or IIII)

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Q: What are the weaknesses of roman numerals?
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