Hey guys, desperately need your help right about now.
Got an exam tomorrow, and this shit just came out of nowhere right at me at full speed.
I've no clue what I'm supposed to be doing wit this, any pointers are greatly appreciated!
pic related
Bruh, I can barely do long division. Bumping for interest tho. Btw, do you really got aids?
What's that creepy arrow sign mean?
Google "let p and q be the following propositions". That should point you to some examples.
>>78730
>What's that creepy arrow sign mean?
"Implies".
If P implies Q, then whenever P is true, Q must also be true.
>>78728
P means n is 1, 2,...,18, or 19.
What does Q mean? The greatest common divisor of n and 20 is smaller than 20.
Well, since the divisors of 20 are smaller or equal to 20, Q simply means that the gcd of n and 20 is not 20, that is, n is not divisible by 20.
(i) is true, if n < 20 then the gcd of n and an arbitrary number must be smaller or equal to n, that is, smaller than 20.
(ii) is not true, since for example 111 has gcd(111,20) = 1 < 20, but 111 > 20.
>>78791
What's the difference between ii) and iii)?
>>78794
sorry I only know the mathematical symbols.
P => Q is true if and only if P is false or Q is true.
I don't know what he meant with P if Q, that's why I didn't answer them.
>>78728
There is always a stupid questions thread up on /sci/. I don't know the answer but they can probably help.
>>78794
ii) and iii) are mathematically equivalent,if I recall my logic correctly.
