Part A · Common Core60 questions on content both SL and HL students study: Algebra, Functions, Geometry & Trig, Statistics, Calculus.
Part B · SL Advanced15 harder application/word problems at the top of the SL syllabus — still shared content, pushed to SL's ceiling.
Part C · HL-Only25 questions on topics that appear only in HL: complex numbers, proof, 3D vectors & planes, further calculus, further trig.