Respuesta :

Abeanie

Answer

sometimes

* entries are the amount of numbers in the matrices*

{ 6, 0, 9, 7}

would have 4 entries

2*3 and 2*3 both have the same number of entries but are not defined

and 2*3 and 3*2 both have the same number of entries and are defined

so it can't be always or never.

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