Find the n(B) and n(U) — task. Mathematics State Board, Class 9.

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If $n (A) =$ 564, $n (A \cup B) =$ 764, $n (A \cap B) =$ 314 and $n (B^{'}) =$ 614. Then $n (B) =$ and $n (U) =$ .

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2. Find the n(B) and n(U)