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A number series hides a rule. Write the gap between each pair of neighbours: the same gap every time, a gap that grows, gaps that take turns, or numbers that are doubled. Once you see the rule, the next number is easy.
✓ You passed this topic’s test.
Look at the gaps — “write the jump between each pair of numbers — the jumps show the rule”
Use it for: “What comes next”, “find the missing term” and pattern questions in every Olympiad paper.
Check: 3, 5, 8, 12, 17, 23 has gaps 2, 3, 4, 5, 6 — one rule all the way ✓
Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🧩 Pattern Spotter badge when you pass — and a certificate when you finish all 7 topics of Part 1 · Class 2–4. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
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