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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 2, 2020
Arithmetic sequence | AMC 10A, 2015 | Problem 7

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

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July 2, 2020
Sequence and greatest integer | AIME I, 2000 | Question 11

Try this beautiful problem from the American Invitational Mathematics Examination, AIME, 2000 based on Sequence and the greatest integer.

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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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November 30, 2022
How to teach mathematics : an experiment with triangular numbers and splitting of plane

We discuss how to appreciate the beauty of mathematics and how to communicate the same to children using experiments and pattern recognition.

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November 23, 2022
Geometry workshop for Math Olympiad - Thanksgiving 2022

In the Thanksgiving break, 2022, join Cheenta for an outstanding Geometry workshop for Math Olympiads. In this online workshop students will explore the beauty of geometric thinking and problem solving. Trainer: Dr. Ashani DasguptaPhD in Mathematics from University of Wisconsin-MilwaukeeMath Olympiad coach at Cheenta since 2010 For high school (Grades 9 to 12) Thursday - […]

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November 14, 2022
What is Cheenta Math Circle and how is it creating success stories in advanced mathematics?

Understand how Cheenta Math Circles are critical for training students for math olympiads and other advanced mathematical competitions.

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October 30, 2022
IOQM 2022 problems, solutions, discussion

Problems, solutions and discussion on IOQM 2022 (India).

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October 18, 2022
Sword does not need to remember how the whetstone looks

Imagine sharpening your sword with a whetstone. The job of the stone is to sharpen the sword. It does not matter what color the stone is. Cheenta programs are designed like whetstones. They are supposed to sharpen the creativity and problem solving skills through a slow but sure process. They involve thousands of thought provoking […]

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October 8, 2022
Power of the Point: Free Live Class For AMC 8

This Workshop seeks to shed light on the various applications of the Power of the Point with the help of beautiful problems.

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September 28, 2022
How Siva S got into Purdue University for Ph.D. in Mathematics

How Siva S, a student from Cheenta got into Purdue University to pursue Ph.D. in Mathematics? Learn from Siva's Success Story.

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September 27, 2022
PRMO 2016 Problem No 4 | Combination Problem

Try this beautiful Combination Problem based on Non-negative integer solutions from PRMO 2016 Problem 4. You may use sequential hints to solve it.

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September 26, 2022
PRMO 2016 Problem No 5 | Set Theory Problem

Try this beautiful Set theory Problem based on Set theory from PRMO 2016. You may use sequential hints to solve it.

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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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