Intermediate · 4. Sequences, recurrence and finite states
Prove the structure of a sequence using differences between terms, repeating blocks or a recurrence; when terms are multiplied together, turn the rule into a recurrence for the exponents.
AMC Australia · Intermediate · Selected Topics
Recognise the clues and choose a suitable method.
Explain each step in the five examples.
Solve real competition problems and spot the mistakes you need to fix.