Question

If n(A)=300,n(A∪)=500,(∩)=50 (¹)=350, () ()​

Answer 1

Step-by-step explanation:

Answer-

n(B) = 2️⃣5️⃣0️⃣

n(U)= 6️⃣0️⃣0️⃣

explanation -

Applying set formulae

1. n(AUB) = n(A) + n(B) - n(ANB)
2. 500 = 300 + n( B ) - 50
3. n(B) = 500 - 250
4. n ( B ) = 250

also , to find n(U)

n ( U ) = n ( B ) + n ( B )

n ( U ) = 250 + 350

ANS :- 6️⃣0️⃣0️⃣