Binomial expansion
[STEP I 2000 Question 2 (Pure)]
Binomial expansion, coefficient, sum, even and odd. [STEP I 1994 Question 3 (Pure)]
Complex numbers, modulus and argument, roots of unity, binomial expansion, sum.
[STEP I 1990 Question 2 (Pure)]
Underground Mathematics: Selected worked STEP questions
STEP Question database
University of Cambridge Mathematics Faculty: What do we look for?
University of Cambridge Mathematics Faculty: Information about STEP
University of Cambridge Admissions Office: Undergraduate course information for Mathematics
Stephen Siklos' "Advanced Problems in Mathematics" book (external link)
MEI: Worked solutions to STEP questions (external link)
OCR: Exam board information about STEP (external link)
AMSP (Advanced Maths Support programme): Support for University Admission Tests (external link)