Mathematics · Matrices and Determinants
Let S = {A : A = abcd , A2 - 4A + 3I = Null matrix, a, b, c, d ∈ {0, 1, 2, 3, 4} and Tr(A) = 4}. Then the number of elements in set S is:
- 115
- 217
- 318
- 419✓
Correct answer
19
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