Question

B u (C n A)

Set B= {2,5,7}
Set C= {5,7}
Set A= {1,2,3,4}

"u" means union
and "n" means intersection

Answer 1

Step-by-step explanation:

B u(C n A)

{2,5,7} u ({5,7} n{1,2,3,4})

{2,5,7} u phi

{2,5,7}