Hey guys, desperately need your help right about now. Got an

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.

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>>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.