If n(A) = 15, n(A U B) = 29, n(A ∩ B) = 7, then n(B) = ? *
1 point
51
12
15
21
Answers
Answered by
4
Answer:
Given : n(A) = 15, n(A U B) = 29, n(A ∩ B) = 7
To find : n(B)
Solution :
We know
n(A U B) = n(A) + n(B) - n(A ∩ B)
29 = 15 + n(B) - 7
29 = n(B) + 8
n(B) = 21
Answered by
2
Answer:
above answer is definitely correct
Similar questions