The obvious element for which it can't exist is 0 as a*0=0 independent of modulo
all other elements have an inverse:
1*1≡1
2*3≡6≡1
3*2≡6≡1
4*4≡16≡1
if there are more than a few numbers/guessing is inefficient it can be calculated using the extended euclidean algorithm
Answer:
Coding and Hardware Hacking
Explanation:
You can learn coding just as well through a online class or even on the internet through yo*tube than an in person class whereas it would be alot easier learning hardware hacking in person because you are given the opportunity to ask and can be corrected for small mistakes due to the task being manual. Coding can be learnt online independently if needed although so can hardware hacking but having a teacher to correct you and teach you handy tricks from their experience will get you further in that sense.
Hi!
A computer screen is what you are staring at right now!
It displays the output. Behind it are wires and cords.
~CoCo
$ 75000 is the maximum amount that he can spend per month paying off credit cards and loans and not be in danger of credit overload.
More than this amount will exceed his income.