PRMO 2019

Pre Regional Math Olympiad (Pre RMO 2019) – India is coming up on August 11, 2019. Find information and resources in this page.


Apply here:

Important Dates:

Start Date End Date Event
1st June 2019 30th June 2019 Registration of Center
1st June 2019 7th July 2019 Registration of Candidates
11th August 2019, 10 AM to 1 PM PRMO


Start preparation

Pre Regional Math Olympiad – India is a prelude to Regional Math Olympiad and Indian National Math Olympiad.

At Cheenta Math Olympiad Program

The Geometry Module is active at Cheenta Math Olympiad Program.

The problem-solving sessions and one-on-one sessions are also active.

Doubt Clearing Portal is at work with internal students to resolve queries.


Solve great problems

Keep coming back! We are adding great problems with sequential hints every week.

Clocky Rotato Arithmetic

Do you know that CLOCKS add numbers in a different way than we do? Do you know that ROTATIONS can also behave as numbers and they have their own arithmetic? Well, this post is about how clocks add numbers and rotations behave like numbers. Consider the clock on earth....

Circle in Circle – PRMO 2017

PRMO 2017 (pre regional math olympiad) has this beautiful geometry problem of circle in a circle. Try with sequential hints.

Locus of vertex of an equilateral triangle

A beautiful geometry problem from Math Olympiad program that involves locus of a moving point. Sequential hints will lead you toward solution.

Pappus Theorem – Story from Math Olympiad

Alexander the great founded Alexandria in Egypt. This was in the year 332 Before Christ.  Since then Alexandria became one of the most important cities of the world. It had the Light House and the Great Library. These were the wonders of ancient world. ...

A Proof from my Book

This is proof from my book - my proof of my all-time favorite true result of nature - Pick's Theorem. This is the simplest proof I have seen without using any high pieces of machinery like Euler number as used in The Proofs from the Book. Given a simple polygon...

ISI BStat 2018 Subjective Problem 2

Sequential Hints: Step 1: Draw the DIAGRAM with necessary Information, please! This will convert the whole problem into a picture form which is much easier to deal with. Step 2: Power of a Point - Just the similarity of \(\triangle QOS\) and \(\triangle POR\) By the...

Napoleon Triangle for Math Olympiad – Cheenta Open Seminar

Napoleon Bonaparte loved mathematics. Legend goes that he discovered a beautiful theorem in geometry. It is often called the Napoleon Triangle and has applications in math olympiad

A Math Conversation – I

Inspired by the book of Precalculus written in a dialogue format by L.V.Tarasov, I also wanted to express myself in a similar fashion when I found that the process of teaching and sharing knowledge in an easy way is nothing but the output of a lucid discussion between...

The 3n+1 Problem

This problem is known as Collatz Conjecture. Consider the following operation on an arbitrary positive integer: If the number is even, divide it by two.If the number is odd, triple it and add one. The conjecture is that no matter what value of the starting number, the...

The Dhaba Problem

Suppose on a highway, there is a Dhaba. Name it by Dhaba A. You are also planning to set up a new Dhaba. Where will you set up your Dhaba? Model this as a Mathematical Problem. This is an interesting and creative part of the BusinessoMath-man in you. You have to...