SOLUTION: If n(A) = 5, n(A ∪ B) = 8, and n(B) = 5, then what is n(A ∩ B)?

SOLUTION: If n(A) = 5, n(A ∪ B) = 8, and n(B) = 5, then what is n(A ∩ B)?

Algebra.Com

Question 928161: If
n(A) = 5, n(A ∪ B) = 8, and n(B) = 5,
then what is
n(A ∩ B)?
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

If n(A) = 5, n(B) = 5, and n(A U B) = 8, then

n(A U B) = n(A) + n(B) - n(A ∩ B)
8 = 5 + 5 - n(A ∩ B)
n(A ∩ B) = 5 + 5 - 8
= 10 - 8
= 2 ...................Ans.
RELATED QUESTIONS
If n(A∪B)=52,n(A∩B)=10, and n(A)=n(B), find n(A). A. 31 B. 21 C. 5 D.... (answered by ikleyn)

If n(A)=15, n(B)=18, n(C)=16, n(A∩B)=7, n(A∩C)=6, n(B∩C)=7, and... (answered by ikleyn)

if n(A)=7, n(B)=15, and n(A∩B)=5; what is... (answered by MathLover1)

If n(A)=13, n(A∪B)=19, and n(B)=15, what is n(A∩B)? Please... (answered by ikleyn)

If n(A)=13, n(A∪B)=19, and n(B)=15, what is n(A∩B)? Please help. (answered by Edwin McCravy,ikleyn)

If n(B) = 17, n(A ∪ B) = 25, and n(A ∩ B) = 6, find... (answered by ewatrrr)

If n(A) = 109, n(A ∪ B) = 140, and n(A ∩ B) = 44, find... (answered by ikleyn)

If n(A∪B)=40, n(A∩B)=10 and n(A)=15, find... (answered by Edwin McCravy)

If n(A) = 66, n(B) = 15, and n(A ∩ B) = 6, find n(A ∪ B). (answered by rothauserc,ikleyn)