Question

Find the sets A and B if A−B={1,5,6,9}, B−A={2,10}, and A∩B={4,7,8}.

A={2,10},B={1,5,6,9}
A={1,5,6,9},B={2,10}
A={2,4,7,8,10},B={1,4,5,6,7,8,9}
A={1,4,5,6,7,8,9},B={2,4,7,8,10}
A={},B={}

Answer 1

1,5,6,9 are in A but not in B
2, 10 are in B but not in A
4,7,8, are in both sets