Strange challenge questions

Question

Q: which built-in data types do exist in c#?
A1: decimal(yes), double(yes), ulong(yes), single(no)
A2: all yes
A3: double and ulong (yes)
A4: ...
It says wrong for the ones all i tried. I think all the questions "select all that applies" should be revised.

Answer 1

A1 is correct, however be careful with multiple choice quizzes. Before clicking Submit make sure the ones you selected are really selected. Sometimes the rectangle blinks but the checkbox does not check.

Answer 2

Decimal, double and ulong is the correct answer; I've encountered the same one before and got it correct.
If it says otherwise then report the question by going back on your challenge history🙂

Answer 3

Hmm, odd. I can see it. When you scroll through the answers and see if you was correct or incorrect, there should be a little exclamation mark at the top of each question. If not then I'm not sure, hopefully other users will report it and get it removed if it truly is incorrect🙂

Answer 4

Thanks for the reply. But the problem is that i can not find the report facility in the challenge history. It only shows pass or fail for each answer for both user. There is nothing to be clicked in the page except rematch.