Given:
The universal set is given as U={b, d, g, m, o, r, u, y}.
The elements of set A is given as A= {b, u, y}.
Required:
The complement of set A.
Step-by-step explanation:
The universal set is given as,

The complement of any set which is a subset of a universal set is obtained by eliminating those elements from the universal set which is present is set A.
Therefore the complement of A is calculated as,

Answer:
Thus the complement of set A is A' = { d, g, m, o, r }.