exam Maths Puzzle Numerical Ability

If A is a 3 � 4 matrix, B is a 4 � 12 matrix, and C is a 12 � 2 matrix, then A + B − C = ??

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exam Other Question

Graph the following inequalities:

3x - 4y < 12 Please find:

the distance (-2,3,1) and (4,5,-1)

and

midpoint (-2,3,1) and (4,5,-1)

Thanks