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86. A matrix is an arrangement of items into labeled rows and columns within a_____-.
(A).Tabe
(B).Row
(C).Column
(D).None of the above


87. An n × n matrix is known as_________.
(A).Rectangular matrix
(B).Uniform matrix
(C).Square matrix
(D).None of the above


88. A matrix having irregular numbers of items in each row is known as___________.
(A).Uniform matrix
(B).Ragged matrix
(C).Square matrix
(D).None of the above


89. An n × m matrix is known as__________, i.e., one whose size may not be the same in both dimensions.
(A).Rectangular matrix
(B).Uniform matrix
(C).Ragged matrix
(D).None of the above


90. A matrix having a larger number of elements with zero value than the number of nonzero elements is said to be a_______
(A).Diagonal matrix
(B).Sparse matrix
(C).Triangular matrix
(D).None of the above