> Can you give me an example of a question that isn't located in glassdoor.com and is "diverse but not hard".
Sorry, `diverse' is an attribute of the distribution of questions you ask. Not of any single question. If for each interview you take a random question from glassdoor.com (and perhaps even tweak it a bit, if you feel like it), that might even meet the definition of a diverse but not too hard selection. (Unfortunately, I know almost nothing about glassdoor.com, and what kind of questions they have.)
Sorry, `diverse' is an attribute of the distribution of questions you ask. Not of any single question. If for each interview you take a random question from glassdoor.com (and perhaps even tweak it a bit, if you feel like it), that might even meet the definition of a diverse but not too hard selection. (Unfortunately, I know almost nothing about glassdoor.com, and what kind of questions they have.)