Answer:
empty set.
Explanation:
Given that
A = {1, 3, 5, 7, 9}, B = {2, 4, 6, 8, 10}, C = {1, 5, 6, 7, 9}
And we have to find A ∩ B.
A ∩ B means the numbers that are common in both the sets A and B.
Looking into the set A and B, there is no any common number.
When there is no any member in set then it is said to be an empty set and denoted by Ф.
Therefore, A ∩ B = Ф
Hence, A ∩ B is an empty set.