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March 10, 2022
What are opportunities after Math Olympiad?

Watch the video to learn more about opportunities after Mathematical Olympiads in India, the United States and other countries.

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September 3, 2021
Walking with the Masters

reading a book written by a true master is like learning from him or her directly. It is an outstanding opportunity that none of us should miss. Here are some of those walks with the masters, that has transformed my life and the way I do mathematics. You may use this list of beautiful mathematics books to stay inspired.

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July 31, 2021
No-short-cut approach at Cheenta

If you are preparing for Mathematics Olympiads, ISI-CMI Entrances or challenging College level entrances then this article is for you. We will describe the no short-cut approach of Cheenta Programs and how you can use them.

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October 28, 2020
Letter to parents: Talk about infinity

Dear parent, One of the key contributions of modern mathematics is its tryst with infinity. As parents and teachers we can initiate thought provoking communication with our children using infinity. Consider the following set: N = {1, 2, 3, … } Notice that N contains infinitely many elements. Take a subset of N that consists […]

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January 17, 2020
Teachers for Tomorrow - Day 1

‘Teachers for Tomorrow’ is a unique program for parents and teachers who wish to take their kids / students an extra mile in mathematical training. Cheenta uses modern tools (such as Latex, GeoGebra, STACK etc.) to deliver its courses. It also uses carefully experimented teaching methods developed in USSR, United States, and India. We firmly believe that these tools and methods are very valuable in stimulating creativity in young mind.

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November 15, 2019
Imagination and reason in Mathematics

Philosophical Remarks When did we first fall in love with mathematics? For me, it was in class 6. My father exposed me to a problem from Euclidean geometry. We were traveling in Kausani. After days of frustration and failed attempts, I could put together the ‘reason’ that made ‘everything fit together perfectly’. The problem was […]

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July 1, 2025
Australian Mathematics Competition - 2023 - Middle Primary - Grade 3 & 4 - Questions and Solutions

Try out the problems from Australian Math Competition - 2015 - Middle Primary

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June 19, 2025
Every Young Students in India Should Take the NMTC 2025

What is NMTC (National Mathematics Talent Contest)? The National Mathematics Talent Contest or NMTC is a national-level mathematics contest conducted by the Association of Mathematics Teachers of India (AMTI). Who can appear for NMTC 2025? Exam fee (2025): Rs.150/- per candidate Syllabus The syllabus of the National Mathematics Talent Contest (NMTC) is similar to the syllabus of the Mathematics Olympiad […]

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May 11, 2025
ISI BStat-BMath UGA & UGB 2025 Problem and Solution

UGA 1. (A) 2. (C) 3. (B) 4. (B) 5. (A) 6. (D) 7. (D) 8. (D) 9. (B) 10. (B) 11. (C) 12. (D) 13. (C) 14. (D) 15. (B) 16. (D) 17. (D) 18. (C) 19. (C) 20. (A) 21. (A) 22. (C) 23. (B) 24. (A) 25. (C) 26. (B) 27. (A) […]

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October 17, 2024
Exploring the Chinese Remainder Theorem for Polynomials: CMI B.Sc. Entrance 2016- Subjective Problem 5

Isn't it exciting to know that Chinese Remainder Theorem can also be applied in the context of polynomials?

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August 25, 2024
ISI BStat BMath Entrance 2018 - Objective Problems and Answers

Indian Statistical Institute BStat and BMath Entrance 2018 Objective Problems and Answers

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July 20, 2024
Exploring Locus Problems in Math Olympiad Geometry

Learn about the concept of Locus problem in Geometry of Math Olympiad

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June 22, 2024
ISI and CMI Entrance 2024

We are thrilled to announce that our students have ranked within the top 50 in the country in the Institute's B.Sc. Math Entrance exams. Key achievers include Ahan Chakraborty, Mohak Chugh, Krish Agrawal, Piyush Kumar Jha, and Agastya Agarwal. Special congratulations to Ahan Chakraborty (AIR 12 in I.S.I. B.Stat) and Mohak Chugh (AIR 43 in I.S.I. B.Math). Join our Success Meet-Ups to learn from these top performers and celebrate their achievements.

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May 12, 2024
ISI B.Stat/B.Math 2024 Subjective Problem and Solution

Find the problems and solutions of the ISI B.Stat/B.Math Subjective set 2024.

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May 12, 2024
ISI B.Math/B.Stat Objective 2024 Problem and Solution

Find the ISI B.Math/B.Stat Entrance of Indian Statistical Institute, Objective 2024 questions and solutions.

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April 13, 2024
How to Solve Quadratic Diophantine Equation | ISI Entrance 2015 Objective 12

Learn about Quadratic Diophantine Equations and Number Theory Techniques with a problem from ISI BStat BMath Entrance 2015

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May 10, 2025
NSEJS – 2023 - Problems & Solution

Problem 1 Two blocks A and B of masses 1 kg and 4 kg respectively are moving with equal kinetic energies. Read the following statements \(S_1\) and \(S_2\)Statement \(S_1\) : Ratio of speed of the block A to that of B is (1: 2)Statement \(S_2\) : Ratio of magnitude of linear momentum of (A) to […]

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April 10, 2025
AMC 2021 Middle Primary – Problem 22 with Solution | Australian Mathematics Competition Explained

Dive into the discussion of the solution to Problem 22 from the 2021 AMC (Australian Mathematics Competition), Middle Primary category.

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April 4, 2025
AMC 2022 Middle Primary – Problem 28 with Solution | Australian Mathematics Competition Explained

Dive into the discussion of the solution to Problem 28 from the 2022 AMC (Australian Mathematics Competition), Middle Primary category.

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March 28, 2025
AMC 2021 Middle Primary – Problem 14 with Solution | Australian Mathematics Competition Explained

Dive into the discussion of the solution to Problem 14 from the 2021 AMC (Australian Mathematics Competition), Middle Primary category.

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March 28, 2025
Problem 26: Australian Mathematics Competition 2021 – Middle Primary

Dive into the discussion of the solution to Problem 26 from the 2021 AMC (Australian Mathematics Competition), Middle Primary category.

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February 25, 2025
Problem 20: Australian Mathematics Competition 2022 – Junior Year

Dive into the discussion of the solution to Problem 20 from the 2022 AMC (Australian Mathematics Competition), Junior Year category.

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February 17, 2025
Australian Mathematics Competition - 2015 - Junior years - Grade 7 & 8 - Questions and Solutions

Access Australian Mathematics Competition past year paper of 2015 year 7 - 8 Junior to sharpen your problem-solving skills.

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February 17, 2025
Australian Mathematics Competition - 2016 - Upper Primary - Grade 5 & 6 - Questions and Solutions

Access Australian Mathematics Competition past year paper of 2016 year 5 - 6 Upper Primary to sharpen your problem-solving skills.

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February 17, 2025
Australian Mathematics Competition - 2015 - Upper Primary - Grade 5 & 6 - Questions and Solutions

Access Australian Mathematics Competition past year paper of 2015 year 5 - 6 Upper Primary to sharpen your problem-solving skills.

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February 8, 2025
Australian Mathematics Competition - 2014 - Upper Primary - Grade 5 & 6 - Questions and Solutions

Access Australian Mathematics Competition past year paper of 2014 year 5 - 6 Upper Primary to sharpen your problem-solving skills.

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September 29, 2018
ফ্রি গ্রুপের গ্রোমোভ সীমান্তে একলা থাকেন ক্যান্টর

মানচিত্র আঁকছিলাম। রাস্তা গুলো সোজা সোজা। উত্তর, দক্ষিণ, পুব, পশ্চিমে যাওয়া যায়। এক ধাপ ডাইনে গেলে, সঙ্গে সঙ্গে এক ধাপ বাঁয়ে ফেরার নিয়ম নেই। (তাহলে আর ডাইনে গেলাম কেন!) তেমনি একধাপ উত্তরে গেলে, সঙ্গে সঙ্গে একধাপ দক্ষিণে ফেরাও মানা। 

মানচিত্র আঁকতে আঁকতে দেখলাম এক উদ্ভট দেশ তৈরি হচ্ছে। সে দেশের প্রতি চৌমাথায় অসীম সব রাস্তা। সে সব রাস্তা আবার একে অপরের সঙ্গে তেমন দেখা সাক্ষাৎ করে না। এ হেন দেশের সীমান্ত নিয়ে আমাদের যত মাথা ব্যাথা। খুঁজতে খুঁজতে বেড়িয়ে পড়ল এক আজব কিস্যা!

সীমান্তে একলা দাঁড়িয়ে আছেন ক্যান্টর। 

বাকি আড্ডা ভিডিও তে।

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May 8, 2018
লিনিয়ার বীজগণিত (বাংলায় আধুনিক গণিত)

লিনিয়ার বীজগণিত নিয়ে আমরা একটি ভিডিও সিরিজ তৈরী করছি। 'চিন্তা'-র কলেজ গণিত প্রোগ্রামে যদিও প্রধানত ইংলিশে আলোচনা হয়, আমরা চেষ্টা করি বিভিন্ন আঞ্চলিক ভাষা গুলোতে কিছু আলোচনা করতে।   পরবর্তী আলোচনা গুলো খুব আসছে এই পাতায়।

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April 4, 2018
গ্রুপোন্তিশ ২
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April 3, 2018
গ্রুপোন্তিশ ১

গ্রুপ থিয়োরি নিয়ে বাংলায় একটা কোর্স তৈরি করার ইচ্ছা বহুদিনের। এই ভিডিও সিরিজটা তারই শুরুয়াদ। আমরা প্রচুর ইংরেজি শব্দ ব্যাবহার করব। তারই সাথে চলতি বাংলা থেকে কিছু ছবি, কিছু কথা, কিছু ধ্বনি আনিত হবে।  গ্রুপ কয় কাহারে? আমরা 'ডেফিনেশন' দিয়ে শুরু করতে পারি। কিন্তু তার বদলে শুরু করছি একটা বেশ কৌতূহলোদ্দীপক উদাহরণ দিয়ে। ভিডিওটা দেখার […]

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November 29, 2015
সংখ্যাতত্ত্ব ১

সংখ্যাতত্ত্ব লেখাটিতে আমরা Pythagorean triplet বা পিথাগোরীয়ান ত্রয়ী নিয়ে আলোচনা করা হয়েছে ।

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September 27, 2014
ইঁদূরের গর্ত থেকে ডিরিশলেটের বাক্স

দৈনন্দিন জীবনে বস্তু গোনবার পদ্ধতি খুব কাজের জিনিস । এই পোস্ট থেকে একটি পদ্ধতি সম্বন্ধে জানব যা ডিরিশিলিটের বাক্স নীতি বা ইংরেজিতে Pigeonhole principle বলে।

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August 12, 2014
এক তারা - দোতারা - তিন তারা

A post on homological triangles... topic of our math camp August 2014 (in Scotland)

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