Question
Question (2 marks): A sequence shows triangles containing 2, 4, 7, 11 dots. State the rule and predict the next term.
Mark scheme (2 marks):
- 1 mark: differences are +2, +3, +4 (increasing by 1 each step).
- 1 mark: next term = 11 + 5 = 16 dots.
2 marks · take your time before peeking.
Sign up to try the next 30 problems
Save your streak, mark answers against the spec, and build a daily revision habit. Free during public beta — no card, no auto-renew.
Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.