📚 Trick Library / पुरानी ट्रिक्स
Revisit previous lessons. Today’s trick and future lessons are not shown here.
Only published tricks from earlier dates are shown.
✍️ Practice Arena
Use today's trick. Type digits only, then press Check.
Loading practice questions…
Challenge a friend!
Solve the bonus question, then share it with a friend.
🏅 My Progress
Saved only on this device. No account needed.
🎓 Certificate & Top 10
No real name, phone, email or account needed. Practise on five different daily tricks to become eligible.
Practise on five different daily tricks. A nickname is optional.
🏆 Top 10 — entire series
Top 10 appears when the score endpoint is connected.
⭐ How scoring works
| Each practice question answered correctly (first time) | +10 |
| Finish all practice questions of the day | +5 |
| Daily bonus challenge answered correctly | +15 |
| Example: 5 questions + completion bonus (+5) + daily bonus (+15) | 70 |
Each question counts once, so repeating it does not add points. A wrong answer never removes points — read the explanation and try again.
Badges: 🌱 First Steps (first correct answer) · 🎯 Accuracy Ace and ✍️ Practice Finisher (complete a day's set).
Certificate: complete the practice on 5 different daily tricks.
Top 10: optional. Add a nickname and your points and accuracy join the series-long leaderboard (calculated by the server).
🔒 Privacy
Personal progress stays on this device. A nickname is optional and used only for the shared Top 10; scores are linked to a random private browser token (the server stores only its hash). The certificate name is asked only at download and is not saved. Leave it blank to print “Math Magic Learner”.
Digital Saathi · Seekho • Samjho • Aage Badho
👤 Organiser
Former Sr. Director (Scientist 'F'), National Informatics Centre
Digital Saathi shares learning, technology and social service — Learn · Share · Serve — free for everyone.
🗓️ Classes & schedule
- 📲Online – every day: one new Math Magic trick with a visual lesson, practice questions and explanations. Starts 20 Oct 2026 (Dussehra).
- 🏫Offline class – every Sunday, 10:00–11:00 AM (1 hour, as per requirement)
1403, Sector 7, Kurukshetra. Only for interested students who want to attend or clear doubts — attendance is optional. - 👥Who can join: students 10+ years, school students, competitive-exam preparation, parents and teachers.
📞 Contact & follow
For any enquiry: 9466137300
🎉 Dussehra launch poster
Tap to enlarge. Share it with friends and family!