alleryIf A is 3×4 and B is 4×2, dimensions of AB:
A3×2
B2×3
C4×4
DCannot multiply
Answer & Solution
Correct answer: A. 3×2
**For AB:** middle dimensions (cols of A and rows of B) must match (both 4 here).
**Result has outer dimensions:** 3 rows × 2 columns = 3×2.
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