Question

last one >.<

Answer 1

proofs and statements oh man the question looks easy.... I do know that biconditional has two statements one is the original and the other is flipped

Answer 2

@UsukiDoll . I think it might be A ?

Answer 3

biconditional is p ↔ q

Answer 4

maybe, but I haven't taking a proof writing class yet. However, I do know some terminology.

Answer 5

“p is necessary and sufficient for q”
“if p then q, and conversely”
“p iff q.”

Answer 6

First of all determine what is p and q and then you can see which one doesn't suit.

Answer 7

iff means if and only if

Also this book maybe helpful,
http://web.karabuk.edu.tr/hakankutucu/Discrete_Mathematics_and_Its_Applications_7th_Edition_Rosen.pdf

Answer 8

Biconditionals are statements in which p-->q and q-->p are both true. The statement and its converse are simultaneously true.

To form a biconditional, both a statement and its converse MUST be true.

The "bad" conditional here (it is not a biconditional as the question leads us to believe) is C.

Answer 9

Directrix says,

(p → q) ∧ (q → p)

Answer 10

can someone here help me please? no one here on the site is helping me :/

Answer 11

Two angles form a linear pair if and only if the angles are adjacent.

If two angles form a linear pair, then they are adjacent. (True)

But, its converse: If two angles are adjacent, then they form a linear pair is false.

Option C is not a biconditional at all. I think the question is what confused us all.

@lanana