Question

if n(A)=15, n(AUB)=29, n(AnB)=7 then n(B)=?​

Answer 1

Ans-n(B)=43

We know,

n(A U B) = n( A) + n(B) - n(A ∩ B)

So,

29 = 15 + n(B) - 29

n(B) = 29 + 14

n(B) = 43

Answer 2

Answer:

ha aap kai karan aajj hamara mood thik ho gaya thanks aapko ......

it's my pleasure that you answer me very nicely.....

keep smiling ahead