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Maths-

General

Easy

Question

If [1 2 3 ]A = [4 5], the order of matrix A is :

3 × 2
3 × 1
2 × 3
2 × 1

The correct answer is: 3 × 2

Order of [1 2 3] is 1 × 3
Order of [4 5] is 1 × 2
$therefore$ order of A is 3 × 2

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