Answer:

1. C' = { 5 , 6 , 7 }

2. ? I only know no. 1 sorry

Step-by-step explanation:

C' = U-C

C' = { 0 , 1 , 2 , 3 , 4 , 5 ,6 ,7 } - { 0 , 1 , 2 , 3 , 4 }

C' = { 5 , 6 , 7 }

In other terms you'll subtract the numbers ( C ) that are the same in ( U ) , that's all i hope it helps you