Question

I got option D.

@jim_thompson5910

Answer 1

yes

Answer 2

No guessing!

Answer 3

lol

Answer 4

R E A D !

Answer 5

the first statement can be written as
if it is a dog, then it is a mammal
the "contrapositive" of that statement, which is equivalent, it
if it is not a mammal, then it is not a dog

Answer 6

that is one way to solve this problem
the other way is this
the first statement is true

all the options are false except the last one
but it is the contrapositve of the first one
\[P\to Q\iff \lnot Q\to \lnot P\]

Answer 7

Aw, you solved it! How beautiful... :D

Answer 8

did you like my \(\huge \lnot\) ?

Answer 9

What is that? O.o

Answer 10

\(\clubsuit\) is good too

Answer 11

that means "not" in logic

Answer 12

^That one is pretty!

Answer 13

\(\lnot Q\) means "not Q"

Answer 14

Oh!
~Cards are `cool`, Dominoes are better though!

Answer 15

are you like always asking questions here day and night? trying to do five semesters worth of math before september? just asking ...

Answer 16

Um no, hahaha. I sleep and eat too, but when I'm not doing those things- I do math as well. I ask questions, but people's time zones are different- so sometimes I have to repeat the same questions , numerous times, until someone answers them.
-Also, I've never heard of 5 semesters; I think a full school year only allows 4 :P .

Answer 17

@satellite73