Curious about hardest 100 level courses

I'm taking chem135 phys161 and mat241 right now but I was just wondering what yall think is like the hardest 100 level courses. I only know that mignerey has a 20% curve for the overall grade which absolutely blows my mind. Planet terps charts show math115 as a beyond cooked avg gpa of 1.94 over 6.6k report grades but it's literally just pre-calc, how hard is that supposed to be?