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matrics multiplication

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c) 9375

A1.30x35     A2.35x15     A3.15x5     A4.5x10

Multiplication order will be (A1(A2A3))A4.Multiplying A2A3 we get 35*15*5=2625.Then (A1(A2A3)) will give the result as 30*35*5=5250.Finally (A1(A2A3))A4 will result in 30*5*10=1500.Adding 2625+5250+1500=9375
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