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Question

If A = {p,q,r} and B = {x,y}, find A × B.

A
ϕ
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B
{(p,q) ,(q,r), (r,x), (p,y), (q,y), (r,y)}
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C
{(p,x), (p,y), (q,x), (q,y), (r,x), (r,y)}
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D
{(x,x), (p,x), (q,x), (r,x), (y,y), (p,y), (q,y), (r,y)}
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Solution

The correct option is C {(p,x), (p,y), (q,x), (q,y), (r,x), (r,y)}
Given, A = {p,q,r} and B = {x,y}
A × B = {p,q,r} × {x,y}
A × B = {(a,b): aA and bB}
A×B=(p,x),(p,y),(q,x),(q,y),(r,x),(r,y)

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