Answer:
a) {4, 8}
b) {1, 2, 3, 5, 6, 7}
c) {1, 7}
Step-by-step explanation:
(note that roster form refers to creating a set including all numbers which is part of the set, rather than only listing the numbers.)
a)
B ∩ D refers to the intersection of B and D. This means the numbers which are both in the set B and the set D. Hence, {4, 8} is the answer.
b)
D' is D prime, which means any number that is not in the set D. Hence, {1, 2, 3, 5, 6, 7} is the answer.
(c)
(B U D)’ refers to the prime of the union of B and D. Firstly, the union of B and D means the numbers which are either in B, in D or in both. This would essentially just be the numbers in B. Secondly, the prime of that would just be the numbers that are not in the set B. Hence, {1, 7} is the answer.
