Final answer:
The complement of set A, denoted as A', consists of elements from the universal set U that are not in A. Given that U = {j, k, l, m, n, o, p} and A = {k, n, o, p}, the complement set A' is {j, l, m}.
Step-by-step explanation:
The question asks for the complement of set A, which is denoted as A'. In set theory, the complement of a set A within a universal set U includes all the elements that are in U but not in A. Based on the given sets, where U = {j, k, l, m, n, o, p} and A = {k, n, o, p}, we can find A' by listing all the elements from U that are not included in A.
To write the complement set A' using the roster method, we list all elements of U and exclude those that are in set A:
- Elements in U: j, k, l, m, n, o, p
- Elements in A: k, n, o, p
- Removing the elements of A from U, we are left with: j, l, m
Therefore, the complement of set A, or A', using the roster method is: A' = {j, l, m}.