Discussion
A/An ______ is a rectangular array of numbers arranged in rows and columns enclosed by brackets.
Answer: A
A matrix is a rectangular array of numbers arranged in rows and columns and enclosed by brackets. A record is a collection of related fields, an object is an instance of a class, and a field name is a label of a column in a table, so none of them is such an array of numbers. A matrix with m rows and n columns is said to be of order m by n, and it is written inside brackets.
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