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

PDF chapter test TRY NOW

If $n (A) =$ 459, $n (A \cup B) =$ 659, $n (A \cap B) =$ 209 and $n (B^{'}) =$ 509. Then $n (B) =$ and $n (U) =$ .

Did you find an error?

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