I am self studying for an exam in algebra from Textbook "Algebra" by Thomas Hungerford and I try exercise problems . Some of them are about determining a group or field and as I checked it comes without any answers to those questions.
It is not possible to type every such question here for verification. So, can you please tell if any solution to my problem as sometimes despite best of effort and no matter how clear any student's concepts are there could be mistakes which lead to difference of answer without his/her realization that he is wrong.
If someone knows of any institute that run a webpage (due to offering of problems from Hungerford)? More precisely, I am interested in answers to problems from Section: Fields and Galois Theory as of now.
Or there is some other solution of my problem ?
I hope this question is not off-topic here!