Question: Postcodes in Australia always contain four digits. Postcodes would be represented as: (A) numbers, as this restricts data entry to just digits. (B) text, as

Postcodes in Australia always contain four digits. Postcodes would be represented as:

(A) numbers, as this restricts data entry to just digits.

(B) text, as some postcodes commence with one or more zeros and their numerical order is not significant.

(C) numbers, as this allows them to be used as part of mathematical calculations.

(D) text, as they are often combined with other textual items to form complete addresses.

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