Answer:
{ b, d, f }
Step-by-step explanation:
In the roster form we write the elements of a set by separating commas and enclose them within {} bracket.
We have give,
[tex]U = \{a, b, c, d, e, f, g\}[/tex],
[tex]A = \{a, c, e, g\}[/tex],
[tex]B = \{a, b, c, d\}[/tex],
[tex]\because A' = U - A[/tex]
[tex]\implies A' = \{a, b, c, d, e, f, g\} - \{a, c, e, g\}[/tex]
= { b, d, f }