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Numbers, numerals & digits
Three words people mix up — the number is the idea, the numeral is how we write it, the digit is one of its symbols.
Number
The idea, the amount.
the count of fingers on two hands
Numeral
How the number is written.
10, X, 一〇
Digit
One symbol inside a numeral.
1 and 0 are the digits in 10
Why the difference matters
The numeral 10 uses two digits (1 and 0) to represent the number ten. In Roman numerals, the same number is written X — one symbol, no zero. Same number, different writing.
Quick check
How many digits are in the numeral 2026? (Four:
2, 0, 2, 6.)