Sets Relations And Functions Question 76
Question: If $A=\{2,3,7,9\}, B=\{3,7,8\}$, then $A \Delta B$ is
Options:
A) {3, 7}
B) {2, 8, 9}
C) {2, 3, 7, 8, 9}
D) {3, 8, 9}
Show Answer
Answer:
Correct Answer: B
Solution:
- [b] $ A-B={2,9},B-A={8} $
$ \Rightarrow A\Delta B=(A-B)\cup (B-A)={2,8,9} $