Differences in question difficulty all, difficulty, following, question

kseniaru

Hello all,
Can anyone tell me if each of the following questions are easier than, on par with, or more difficult than actual CFA Level I exam questions?
Schweser Study Notes Q within text (concept checkers, comprehensive probs, self tests)
SchweserPro Question Bank questions
Schweser Practice Exams Volumes 1 and 2
CFAI intext end of readings questions
CFAI Mock Exams
CFAI Sample Exams
Thanks to all who reply.