ok I just re-ran it.. now it works. Ghost in the machine..

Log
0 11
100
Test Passed

I've tried your code several times and it passed every time.

it returns 100, the attempt says it should have been 0.. from input exam = 0 projects 11.. I'm lost

or means any of those conditions being true (or both of them), you have to return 100. Why do you think it could be and instead? As I said, the expected value is 100 for that input. No need to clarify anything, it's written like that in the description.

I have given up on this for now, until it is clarified - if it is intended to be a "or" or "and". As the attempt seems to keep failing due to returning what apears to be the correct logic for what is currently written. Really wish i could screen shot

I don't get what the problem is, in Python the expected value for that input is 100.

"100, if a grade for the exam is more than 90 or if a number of completed projects more than 10."
the magical "OR" in the middle of the sentance does not seem to commpute when student get 0 in exam and do 11 projects, surely student has 100 not 0.