Question 1210254
.
Of 90 students who took Biology and Geography test, 5/12 took Biology and 5/6 Geography. 
Every candidate took at least one of the two subjects.
i. What fraction of the students took both subjects?
ii. What fraction of the students took Biology but not Geography?
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                  The problem is fatally  DEFECTIVE, 


       since  5/12  of  90  students is  37.5,  which is not a whole number.



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I posted this "problem" to the Google AI, and Google AI produced incorrect answer
without making a preliminary analysis of the input data for correctness.


See this Google-AI solution of 05/01/2025 under this link


https://www.google.com/search?q=Of+90+students+who+took+Biology+and+Geography+test%2C+5%2F12+took+Biology+and+5%2F6+Geography.+Every+candidate+took+at+least+one+of+the+two+subjects.+i.+What+fraction+of+the+students+took+both+subjects%3F+ii.+What+fraction+of+the+students+took+Biology+but+not+Geography%3F&rlz=1C1CHBF_enUS1071US1071&oq=Of+90+students+who+took+Biology+and+Geography+test%2C+5%2F12+took+Biology+and+5%2F6+Geography.+Every+candidate+took+at+least+one+of+the+two+subjects.+i.+What+fraction+of+the+students+took+both+subjects%3F+ii.+What+fraction+of+the+students+took+Biology+but+not+Geography%3F&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCTI4ODJqMGoxNagCCLACAfEFoNXAzHHOyK7xBaDVwMxxzsiu&sourceid=chrome&ie=UTF-8



Naturally, I posted them my notice saying that their solution was incorrect.



It confirms the basic truth: the AI in its current version works perfectly,
if it finds a source in the Internet to re-write from;
and it is powerless, when it does not find such a source in the Internet to re-write from.