IDNLearn.com is designed to help you find reliable answers to any question you have. Get accurate and timely answers to your queries from our extensive network of experienced professionals.
Answer:
= {1,7}
Step-by-step explanation:
1 is in B
2 is in B but is also in A so we take that away
3 is in B but is also in A so we take that away
7 is in B