JAMB - Mathematics (1994 - No. 23)
The determination of the matrix \(\begin{pmatrix} 1 & 3 & 3 \\ 4 & 5 & 6\\ 2 & 0 & 1 \end{pmatrix}\) is
-67
-57
-1
3
Explanation
((1 x5x1) +( 3x6x2) + (3x4x0)) - ((3x5x2) + (1x6x0) + (3x4x1))
( 5 + 36) - (30 +12) = 41 - 42
= -1
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