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प्रश्न
Which of the following is correct?
पर्याय
Ø ⊆ {a, b}
Ø ∈ {a, b}
{a} ∈ {a, b}
a ⊆ {a, b}
उत्तर
Ø ⊆ {a, b}
Explanation;
Hint:
‘Q’ is a subset of every set.
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