Question

Let A=(1,2,3) B=(3,4) C=(4,5,6)
Find (A×B) not union (B×A)
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Answer 1

Answer:

(i)A×(B∩C)

∩ Intersection:common between two sets

B∩C={3,4}∩{4,5,6}={4}

A×(B∩C)=

{1,2,3}×{4}

={(1,4),(2,4),(3,4)}