Question

difference between digit and number?
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Answer 1

Answer:

For the record, here's the difference: A digit is a single numerical symbol, from 0 to 9. A number is a string of one or more digits.

Answer 2

Answer:

A digit in base  n  is one of the  n  symbols used to represent the whole numbers zero through  n−1 . Thus in base ten the digits  0,1,2,3,4,5,6,7,8,9  are used to represent the numbers zero, one, two, three, four, five, six, seven, eight, nine.