4024/11 May/Jun 2023, Question 15: Pattern Sequences and Special Sequences
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
A sequence begins 1, 7, 13, 19. Work out a formula using n that gives the nth term.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 2 marks
- 1Common difference = 6, so 6n + …
- 2n = 1: 6 × 1 − 5 = 1
- 3nth term = 6n − 5
Answer6n − 5
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