Question

let A={a,b,c,d), B= (a, b, c } and C=( b,d}
find all sets x such that!
x⊂B and x⊂⊂

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Answer 1

⇒ Option 3 is true

as C⊇(A∩B)

⇒B∩C⊇(A∩B)

as A∩B

=ϕ

⇒B∩C

=ϕ

⇒ Option 4 is true.