Mathematics · Medium
5
questions · ~4 min · 3 hints each (−5 pts)
Confidence tracking, 3-tier hints and instant feedback.
What you'll learn
Each question helps you build key knowledge and skills.
- 1The nth term of a linear sequence has the form an+b, where a is the common difference.
- 2Find a by working out the common difference between consecutive terms.
- 3Find b by checking what adjusts the first term to match using n=1.
- 4Use the nth term formula to find any term without listing the whole sequence.
Question mix
A mix of question types to build your skills.
- Fill the gap×4
- Multiple choice×1
Different question types help you think in different ways.
How it works
A simple 3-step process
- 1
Rate your confidence
Tell us how sure you feel before answering. It helps us understand your starting point.
- 2
Use hints if stuck
Get up to 3 helpful hints per question. Each hint costs 5 Treasure Points.
- 3
See what went wrong
Get instant feedback with clear explanations, so you can learn and improve.
Ready when you are
This takes about 4 minutes.