Rows and Columns in Products Analyze the order of the product matrices or the factor matrices indicated in parts (a)–(c).
(a) If AB is a 6 × 5 matrix, how many columns does B have?
(b) If AB is a 4 × 7 matrix, how many rows does A have?
(c) If matrix A is a 2 × 6 matrix and AB is a 2 × 4 matrix, what order is matrix B?
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