The correct options are
A 2≠3 ↔ 2>3 or 2<3
B 2=3 ↔ 3=4
D a=3 ↔ a ≤ 3 and a ≥ 3
A biconditional statement is true either if both the statements are true or if both the statements are false.
a. 2≠3 ↔ 2>3 or 2<3
Both these statements are true .
b. 2=3 ↔ 3=4
Both these statements are false .
c. a <3 ↔ a>3
If one statement is true the other is false.
d. a=3 ↔ a ≤ 3 and a ≥ 3
If one is true the other is also true .