**Q: **Are numeral systems sometimes called number systems? ¶

**A: **Yes, but that name is ambiguous, as it could refer to different systems of numbers, such as the system of real numbers, the system of complex numbers, the system of p-adic numbers, etc.

**Q: **Is a numeral system the unary numeral system? ¶

**A: **Yes, and in which every natural number is represented by a corresponding number of symbols.

**Q: **Is a numeral system the modified version of the Hindu numeral system developed in India? ¶

**A: **Yes.

**Q: **Are numeral systems based on the positional system in base 2 , with two binary digits, 0 and 1? ¶

**A: **Yes, Positional systems obtained by grouping binary digits by three or four are commonly used.

**Q: **Was a numeral system of this type? ¶

**A: **Yes, and the Roman numeral system was a modification of this idea.