Question

If n(ξ) = 60, n(A) = 35, n(B’) = 36 and n((A ∩ B)’) = 51, find :
n(B)​

Answer 1

Answer:

Go to Launcher Setting > Click Launcher Reload Button.

If the error is not fixed even after reloading the launcher, please uninstall the launcher to re-install.

Answer 2

Answer:

n(b)=36-60=24

it's correct answer

I hope you