🔢 A string of numbers appears — spot the pattern and choose the right answer.
➕ Early levels: what comes next in 1, 3, 5, 7, …?
📈 Later levels: what is the 2,026th term or the sum of the first 100 terms?
💡 If you get one wrong, you'll see a step-by-step explanation of how to find the answer.
⏱️ 10 questions per round — beat your best time!
Still there?