Answer :
{1,3,5,6,7,9}
First: intersection B and C ----> 6
Then: union with A -->
1,3,5,6,7,9
First: intersection B and C ----> 6
Then: union with A -->
1,3,5,6,7,9
Answer: The correct option is (B) {1, 3, 5, 6, 7, 9}.
Step-by-step explanation: We are given the following three sets :
A = {1, 3, 5, 7, 9}
B = {2, 4, 6, 8, 10}
C = {1, 5, 6, 7, 9}
We are to find the set A ∪ (B ∩ C).
We have
A ∪ (B ∩ C)
= {1, 3, 5, 7, 9} ∪ ( {2, 4, 6, 8, 10} ∩ {1, 5, 6, 7, 9} )
= {1, 3, 5, 7, 9} ∪ {6}
= {1, 3, 5, 6, 7, 9}.
Thus, A ∪ (B ∩ C) = {1, 3, 5, 6, 7, 9}.
Option (B) is CORRECT.