This website is for class XI and XII students who wish to pursue B.Sc. at Chennai Mathematical Institute.
Disclaimer. This is an unofficial resource and is not affiliated to CMI.
In-depth solutions to previous CMI entrance exam questions. This includes questions from 2010 and 2011 for which official solutions are not given.
Topic-wise classification of all problems ordered by increasing difficulty. This helps you to specialize in a topic.
Browse previous years' problems
The cutoff has been around 40% for the objective section and 40-50% overall. The objective section is used for screening.
CMI does not publish the cutoff marks but they have responded to individual requests in the past. The scores shown below were shared by former students who were privy to this data.
In 2021, CMI used an unconventional criteria for admission. The cut-off for Part A was 17/40 for everyone. More weightage was given to Part B marks. In the general category with scholarship, students were admitted if they had >=61 marks in total or if they had 39 or more marks in Part B. So, a student who got 17 marks in Part A and 39 marks in Part B was still admitted with scholarship. But a student with 22 marks in Part A and 38 marks in Part B was NOT admitted in that category.
|With scholarship||61/100 or 39/60 in Part B||57/100 or 35/60 in Part B|
|Without scholarship||56/100 or 30/60 in Part B||50/100 or 28/60 in Part B|
There was no waiting list.
The cutoff marks for the year 2020 are given below. The marks are out of 94 instead of 100 since one question had a mistake.
The cutoff marks for the previous years are given below.
|Year||Objective (40 marks)||Overall||Vetted by|
|2016||14||62/124||Sayantani Bhattacharya |
- 2015 Interview experience by Sanjay M who posted this on AoPS. [pdf]
- Why I joined CMI by Vipul Naik who joined CMI despite getting JEE AIR-154.
- How to prepare for CMI by Sai Krishna who joined CMI in 2013. [pdf]
- CMI entrance exam preparation experience by Ankita Sarkar who joined CMI in 2015.
Starting from 2016, admissions are based only on the written test and there is no interview.
When universities in the United States are looking to recruit mathematics students from India, one of the first places they look for applications is from CMI, if not the first place. Universities that are able to get CMI students are always very proud.
Acceptance offers are sent to around 90 candidates and about half of them enroll. This is the reason why the number varies from year to year. Approximate numbers are given below.
|Year||# Test-takers||# Offers||# Students enrolled|
The book contains the problems and solutions from the years 2010-2021.
This website is maintained by Balasundar M, a teacher who has more than 15 years of experience in the industry and academia. He enjoys solving olympiad-type problems over coffee.
If you have a more elegant solution to any problem than the one presented, feel free to email him at
The contents of this website are hosted in accordance with principles of fair use. You agree to email me about any possible infringement of copyright law before taking legal action.