Answer: 3
Step-by-step explanation:
By the intersecting chords theorem,
Answer:
I think the answer is B.
I am very sorry if it is incorrect.
X' = U - X
= {1,2,3,4,5,6} - {1,4,5}
= {2,3,6}
(ZUX') = {2,3,5} U {2,3,6}
= {2,3,5,6}
(Z⋃X′)⋂Y = {2,3,5,6} ⋂ {1,2}
= {2}
the answer is B. hope i helped