1.3 Exercise 9

For both of the questions below, $A$ is a proper subset of $U$.

1. Given the universal set $U = \left\{\right. Billie Eilish, Donald Glover, Bruno Mars, Adele, Ed Sheeran}$ and set $A = \left\{\right. Donald Glover, Bruno Mars, Ed Sheeran}$, find $A ' .$
2. Given the universal set $U = \left\{d|d is a dog\right\}$ and $B = \left\{b ∈ U|b is a beagle\right\}$, find $B ' .$