Question

solve this question of set theory​

Answer 1

Answer:

Answer in pic bro

Step-by-step explanation:

If U = 400

then answer is 0

Answer 2

$\huge{ \green{ \mathfrak{ \underline{Answer}}}}$

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$\boxed{\red{\bold{First \:find \: n(A \cap B):}}}$

$n(A \cup B) = n(A) + n(B) - n(A \cap B)$

$100 = 200 + 300 - n(A \cap B)$

$n(A \cap B) = 500 - 100$

$n(A \cap B) = 400$

$\boxed{\red{\bold{According \: to \:Venn\:Diagram:}}}$

$n(A' \cup B') = n(U) - n(A \cap B)$

$n(A' \cup B') = n(U) - 400$

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