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प्रश्न
Choose the correct alternative:
If A = `[(3, 1, -1),(2, -2, 0),(1, 2, -1)]` and `"A"^-1 = [("a"_11, "a"_12, "a"_13),("a"_21, "a"_22, "a"_23),("a"_31, "a"_32, "a"_33)]` then the value of a23 is
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