If A is a 2x2 matrix defined as A = [[1, 2], [3, 4]], what is the determinant of matrix A?
Category: Math · Difficulty: expert
Hint: Recall the formula for the determinant of a 2x2 matrix.
Answer
-2
Explanation
The determinant is ad - bc; here, 1*4 - 2*3 = 4 - 6 = -2.
This is a expert math riddle — one of the harder riddles here. The answer is -2.
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