Question

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Answer 1

Answer:219

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Step-by-step explanation:

Solution :

A={x,y}

B={a,b,c,d}

a×B having 2×4=8 elements

Total substance of A×B is 28=256

∴ Total no. of subsets of A × B having 3 or more elements

=256−(1nullset+8singletonset+8C2having2elements)

=256−1−8−28=219