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यदि A={:[(2,4,-1),(-1,0,2)]:} तथा B={:[...

यदि `A={:[(2,4,-1),(-1,0,2)]:}` तथा `B={:[(3,4,5),(-1,2,7),(2,1,0)]:}` है तो (AB) ज्ञात कीजिये

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