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Let A order(axb) and Border(cxd) be two matrices, then if ABexists, the order of AB is?(a) axd(b) bxc(c) axb(d) cxdThis question was posed to me during an online exam.The origin of the question is Operations on Matrices topic in section Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Answer»

The CORRECT OPTION is (a) axd

To elaborate: Matrix multiplication exists only when COLUMN of first matrix is same as rows of SECOND i.e b = calso RESULTANT matrix will have number of rows equal to first matrix and column equal to the second matrix.



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