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September 18, 2019
How are Bezout's Theorem and Inverse related? - Number Theory

The inverse of a number (modulo some specific integer) is inherently related to GCD (Greatest Common Divisor). Euclidean Algorithm and Bezout's Theorem forms the bridge between these ideas. We explore these beautiful ideas.

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September 15, 2019
How to use Invariance in Combinatorics - ISI Entrance Problem

Invariance is a fundamental phenomenon in mathematics. In this combinatorics problem from ISI Entrance, we discuss how to use invariance.

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September 6, 2019
The best exponent for an inequality
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June 13, 2019
An alluring trigonometric relation and its Implication
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June 7, 2019
I.S.I Entrance-2013 problem 2

This is the solution of ISI-2013 undergraduate entrance

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June 6, 2019
A function on squares
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June 4, 2019
Extremal Principle : I.S.I Entrance 2013 problem 4

This is a nice problem based on Well-ordering principle , from ISI entrance 2013

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June 2, 2019
Lattice point inside a triangle

Geometry problem from Iran math Olympiad .

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May 28, 2019
An isosceles triangle,on Trigonometry, I.S.I Entrance 2016, Solution to Subjective problem no. 6
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May 26, 2019
Combinatorics - I.S.I 2016 SUBJECTIVE PROBLEM - 1
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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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June 28, 2020
Integers | AIME I, 1993 Problem | Question 4

Try this beautiful problem from the American Invitational Mathematics Examination I, AIME I, 1993 based on Integers. Use sequential hints if required.

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June 27, 2020
Sum of Digits base 10 | PRMO II 2019 | Question 7

Try this beautiful problem from the PRMO II, 2019 based on the Sum of Digits base 10. You may use sequential hints to solve the problem.

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June 27, 2020
Distance travelled | PRMO II 2019 | Question 26

Try this beautiful problem from the PRMO II, 2019, Question 26, based on Distance travelled. You may use sequential hints to solve the problem.

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June 26, 2020
Chords in a Circle | PRMO-2017 | Question 26

Try this beautiful Problem based on Chords in a Circle, Geometry from PRMO 2017, Question 26. You may use sequential hints to solve the problem.

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June 26, 2020
Circle | Geometry Problem | PRMO-2017 | Question 27

Try this beautiful Problem from Geometry based on Circle from PRMO 2017, Question 27. You may use sequential hints to solve the problem.

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June 26, 2020
Trapezoid Problem | AIME I, 1992 | Question 9

Try this beautiful problem from the American Invitational Mathematics Examination I, AIME I, 1992 based on Digits and Rationals.

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June 25, 2020
Side of Square | AMC 10A, 2013 | Problem 3

Try this beautiful problem from Geometry: Side of Square from AMC-10A (2013) Problem 3. You may use sequential hints to solve the problem.

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June 25, 2020
Counting Days | AMC 10A, 2013 | Problem 17

Try this beautiful problem from Algebra based on Counting Days from AMC-10A (2013), Problem 17. You may use sequential hints to solve the problem.

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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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August 22, 2022
NSEP 2015 Problem 9 | Pulley problem

Try this problem on pulley problem on inclined plane from NSEP 2015 Problem 9. You may use sequential hints to solve it.

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