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January 20, 2020
INMO 2020 Problems, Solutions and Hints

INMO 2020 (Indian National Math Olympiad) 2020 Problems and Solutions. We provide sequential hints so that you can try the problems on your own.

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January 1, 2020
Beautiful problems from Coordinate Geometry

The following problems are collected from a variety of Math Olympiads and mathematics contests like I.S.I. and C.M.I. Entrances. They can be solved using elementary coordinate geometry and a bit of ingenuity.

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December 30, 2019
An interesting biquadratic from ISI Entrance 2005

How to combine algebra and geometry to solve a biquadratic? Try this beautiful problem from ISI Entrance 2005. We provide knowledge graph and video.

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December 9, 2019
cos(sin(x)) function in ISI Entrance

A simple trigonometric equation from ISI Entrance. Try this problem. We also added a quiz, some related problems, and finally video.

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December 6, 2019
Geometry of AM GM Inequality

AM GM Inequality has a geometric interpretation. Watch the video discussion on it and try some hint problems to sharpen your skills.

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December 2, 2019
Counting triangles in ISI Entrance

Can you combine geometry and combinatorics? This ISI Entrance problems requires just that. We provide sequential hints, additional problems and video.

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December 1, 2019
Paper folding geometry in ISI Entrance

A problem from ISI Entrance that requires Paper folding geometry. We provide sequential hints so that you can try the problem!

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October 10, 2019
An Hour of Beautiful Proofs

Every week we dedicate an hour to Beautiful Mathematics - the Mathematics that shows us how Beautiful is our Intellect. Today we are going to discuss the Fermat's Little Theorem. This week, I decided to do three beautiful proofs in this one-hour session... Proof of Fermat's Little Theorem ( via Combinatorics ) It uses elementary […]

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October 1, 2019
Inequality - In Equality

This article aims to give you a brief overview of Inequality, which will serve as an introduction to this beautiful sub-topic of Algebra. This article doesn't aim to give a list of formulas and methodologies stuffed in single baggage, rather it is specifically designed to make the introduction to the field of inequality more exciting […]

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September 23, 2019
AM GM inequality in ISI Entrance

Arithmetic Mean and Geometric Mean inequality form a foundational principle. This problem from I.S.I. Entrance is an application of that.

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July 1, 2020
Problem based on Cylinder | AMC 10A, 2015 | Question 9

Try this beautiful problem from Mensuration: Problem based on Cylinder from AMC 10A, 2015. You may use sequential hints to solve the problem.

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July 1, 2020
Series and sum | AIME I, 1999 | Question 11

Try this beautiful problem from the American Invitational Mathematics Examination I, AIME I, 1999 based on Series and sum.

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July 1, 2020
Inscribed circle and perimeter | AIME I, 1999 | Question 12

Try this beautiful problem from the American Invitational Mathematics Examination I, AIME I, 2011 based on Rectangles and sides.

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June 30, 2020
Median of numbers | AMC-10A, 2020 | Problem 11

Try this beautiful problem from Geometry based on Median of numbers from AMC 10A, 2020. You may use sequential hints to solve the problem.

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June 30, 2020
Cubic Equation | AMC-10A, 2010 | Problem 21

Try this beautiful problem from Algebra, based on the Cubic Equation problem from AMC-10A, 2010. You may use sequential hints to solve the problem.

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June 30, 2020
LCM and Integers | AIME I, 1998 | Question 1

Try this beautiful problem from the American Invitational Mathematics Examination, AIME, 1998, Problem 1, based on LCM and Integers.

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June 29, 2020
Rectangle Problem | Geometry | PRMO-2017 | Question 13

Try this beautiful Rectangle Problem from Geometry from PRMO 2017, Question 13. You may use sequential hints to solve the problem.

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June 29, 2020
Problem on Fraction | AMC 10A, 2015 | Question 15

Try this beautiful Problem on Fraction from Algebra from AMC 10A, 2015. You may use sequential hints to solve the problem.

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June 29, 2020
Pen & Note Books Problem| PRMO-2017 | Question 8

Try this beautiful Pen & Note Books Problem from Algebra from PRMO 2017, Question 8. You may use sequential hints to solve the problem.

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June 28, 2020
Greatest Positive Integer | AIME I, 1996 | Question 2

Try this beautiful problem from the American Invitational Mathematics Examination, AIME, 1996, Question 2, based on Greatest Positive Integer.

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September 17, 2022
Geometry: Free Live Class For ISI-CMI

This Workshop seeks to shed light on the various applications of the ISI-CMI Geometry concepts with the help of beautiful problems.

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September 16, 2022
NSEP 2015 Problem 12 | Periodic Motion due to Electrostatic Force

Try this problem on periodic oscillation due to charge from NSEP 2015 Problem 12. You may use sequential hints to solve it.

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September 10, 2022
Number Theory: Free Live Class For AMC 8

This Workshop seeks to shed light on the various applications of the Number Theory concepts with the help of beautiful problems.

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September 8, 2022
Math Kangaroo Ecolier 2010 Problem 16 | Mathematical Imagination

Try this beautiful Problem based on Mathematical Imagination from Math Kangaroo (Ecolier) 2010 Problem 16. You may use sequential hints to solve it.

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September 3, 2022
IOQM 2022 Live Revision Sessions by Shuborno Das

Cheenta is delivering 2 live revision workshops on IOQM 2022. These sessions will be conducted by Shuborno Das, a Cheenta alumnus from Oxford University. You are invited to join the live session.

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August 27, 2022
AMC 8 2019 Problem 3 | Ordering Problem

Try this beautiful Problem based on Ordering of fraction from AMC 8 2019 Problem 3. You may use sequential hints to solve it.

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August 26, 2022
AMC 8 2019 Problem 1 | Number Counting Problem

Try this beautiful Problem based on Number Counting from AMC 8 2019 Problem 1. You may use sequential hints to solve it.

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August 26, 2022
Bose Maths Olympiad Research Project Training 2022

Dr. Ashani Dasgupta is conducting a Training Session so as to guide the participats of the Bose Maths Olympiad Research Project Round.

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August 26, 2022
Cross Ratio - an accidental discovery

If we know nothing about this world, we should know about cross ratio. It is one of those accidents of nature that is so unbelievable, unimaginable, that we need mathematics to accept it.

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August 24, 2022
PRMO 2016 Problem 2 | Number Theory

Try this beautiful interesting problem based on Number Theory from PRMO 2016 Problem 2. You may use sequential hints to solve it.

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