If A = [[1, 2], [3, 4]] and B = [[0, 1], [2, 3]], what is the entry in the second row and first column of AB?
Correct answer: B. 8
- A. 6
- B. 8
- C. 10
- D. 12
Explanation
The required entry is obtained by multiplying the second row of A by the first column of B: (3 × 0) + (4 × 2) = 8. The other entries of the product are not needed.
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