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February 16, 2021
Test of Mathematics Solution Subjective 188 - The Numbered Chessboard

This is a Test of Mathematics Solution Subjective 188 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Problem Consider the squares of an $ 8 X 8 $ chessboard filled with the […]

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February 16, 2021
Test of Mathematics Solution Subjective 181 - Diagonal Moves

This is a Test of Mathematics Solution Subjective 181 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem Suppose that one moves along […]

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February 16, 2021
Test of Mathematics Solution Subjective 177 -The Famous Doors Problem

This is a Test of Mathematics Solution Subjective 177 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem  There are 1000 doors $ […]

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February 16, 2021
Test of Mathematics Solution Subjective 176 - Value of a Polynomial at x = n+1

This is a Test of Mathematics Solution Subjective 176 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem Suppose that P(x) is a […]

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February 16, 2021
Test of Mathematics Solution Subjective 175 - Integer Roots

This is a Test of Mathematics Solution Subjective 175 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem  Let \(\text{P(x)}=x^n+a_{n-1}x^{n-1}+a_{n-2}x^{n-2}+\dots+a_{1}x+a_{0}\) be a polynomial […]

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February 16, 2021
Test of Mathematics Solution Subjective 170 - Infinite Circles

This is a Test of Mathematics Solution Subjective 170 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem Let \({C_n}\) be an infinite […]

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February 16, 2021
Test of Mathematics Solution Subjective 166 -The Grazing Field

This is a Test of Mathematics Solution Subjective 166 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem A cow is grazing with […]

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February 16, 2021
Test of Mathematics Solution Subjective 157 -Limit of a product

This is a Test of Mathematics Solution Subjective 157 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem Evaluate $ \mathbf {\displaystyle \lim_{n […]

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February 16, 2021
Test of Mathematics Solution Subjective 155 -The Lim 1/(n+r) Problem

This is a Test of Mathematics Solution Subjective 155 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem   Evaluate: $ \lim_{n\to\infty} (\frac{1}{n+1}+\frac{1}{n+2}+\frac{1}{n+3}+...+\frac{1}{n+n})$ […]

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February 16, 2021
Test of Mathematics Solution Subjective 150 - Maximum of nth roots of n

This is a Test of Mathematics Solution Subjective 150 (from ISI Entrance). The book, Test of Mathematics at 10+2 Level is Published by East West Press. This problem book is indispensable for the preparation of I.S.I. B.Stat and B.Math Entrance. Also visit: I.S.I. & C.M.I. Entrance Course of Cheenta Problem Find the maximum among $ […]

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May 10, 2025
NSEJS – 2023 - Problems & Solution

Problem 1 Two blocks A and B of masses 1 kg and 4 kg respectively are moving with equal kinetic energies. Read the following statements \(S_1\) and \(S_2\)Statement \(S_1\) : Ratio of speed of the block A to that of B is (1: 2)Statement \(S_2\) : Ratio of magnitude of linear momentum of (A) to […]

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January 30, 2025
American Math Competition 8 (AMC 8) 2025 - Problem and Solution

American Math Competition 8 (AMC 8) 2024 Problems, Solutions, Concepts and discussions.

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January 19, 2025
Indian National Mathematical Olympiad (INMO) 2025 Problem and Solution

Problems and Solutions from Indian National Mathematical Olympiad (INMO) 2025, the third level of Math Olympiad in India.

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December 6, 2024
Exploring Number Theory: Understand Euclidean Algorithm with IMO 1959 Problem 1

Solve beautiful Number Theory problem from IMO 1959 with the help of Euclidean Algorithm and Division Lemma.

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November 30, 2024
Announcement of Singapore Mathematical Olympiad:

Schedule of the Test: Registration Fee: The registration fee is $8.00 per participant (from SMS institutional member schools) per competition category; and $10.00 per participant (from non-institutional member schools). The participants' names and fees should be forwarded by the Head of the Department of Mathematics (of the competing school) to the Chairman of the Competition Committee in the prescribed […]

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November 14, 2024
American Math Competition (AMC) 10 B - Problem and Solution

Here are the problems and solutions of American Math Competition AMC 10A 2024, consisting of 25 questions in MCQ Format

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November 14, 2024
American Mathematics Contest 12B (AMC 12B) 2024 - Problems and Solution

The American Mathematics Contest 12 (AMC 12) is the first exam in the series of exams used to challenge bright students, grades 12 and below, on the path towards choosing the team that represents the United States at the International Mathematics Olympiad (IMO). High scoring AMC 12 students are invited to take the more challenging American Invitational Mathematics Examination (AIME). The […]

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November 14, 2024
American Math Competition (AMC) 10 A 2024 - Problem and Solution

Here are the problems and solutions of American Math Competition AMC 10A 2024, consisting of 25 questions in MCQ Format

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November 14, 2024
American Mathematics Contest 12A (AMC 12A) 2024 - Problems and Answers

Here are the problems and solutions of American Mathematics Contest (AMC 12A) of the year 2024 exclusively at Cheenta Academy

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November 10, 2024
Proving Geometric Properties in Isosceles Triangles: A Deep Dive into RMO 2024 Problem No. 3

It's so beautiful to see Euler's Line, collinearity and triangle properties coming together to solve Problem No. 3 of RMO 2024

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March 17, 2026
Kankinara Faculty training week 15 report (11th Jan 2026)

The 15th week of the Kankinara Faculty and Training Programme was dedicated to strengthening and reinforcing the skills developed throughout the previous weeks. Instead of introducing new topics, the sessions focused on revisiting key areas of learning to ensure clarity, confidence, and long-term retention. Participants engaged in guided revision of English grammar concepts, sentence construction, […]

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March 17, 2026
Kankinara Faculty Training Week 14 report (4th January 2026)

The 14th week of the Kankinara Faculty and Training Programme marked an important milestone, as it focused on evaluating the overall learning progress of the participants through a structured examination. The assessment was designed based on the training conducted over the previous weeks and aimed to measure participants’ understanding of English language skills, grammar concepts, […]

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March 12, 2026
Sundarband and Kankinara Faculty traning week 13 report (21st December 2025)

The 13th week of the Sundarban and Kankinara Faculty and Training Programme focused on introducing participants to modern digital tools while reinforcing their English language foundation. The sessions were designed to help participants become more confident users of technology for learning, communication, and professional growth. The week began with an interactive session on the use […]

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March 5, 2026
AMERICAN MATHEMATICS COMPETITION 10 A - 2018

Problem 1 What is the value of $$\left(\left((2+1)^{-1}+1\right)^{-1}+1\right)^{-1}+1 ?$$ (A) $\frac{5}{8}$(B) $\frac{11}{7}$(C) $\frac{8}{5}$(D) $\frac{18}{11}$(E) $\frac{15}{8}$ Answer: (B) $\frac{11}{7}$ Problem 2 Liliane has $50 \%$ more soda than Jacqueline, and Alice has $25 \%$ more soda than Jacqueline. What is the relationship between the amounts of soda that Liliane and Alica have?(A) Liliane has $20 \%$ […]

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March 5, 2026
AMERICAN MATHEMATICS COMPETITION 10 A - 2017

Problem 1 What is the value of $(2(2(2(2(2(2+1)+1)+1)+1)+1)+1)$(A) 70(B) 97(C) 127(D) 159(E) 729 Answer: (C) 127 Problem 2 Pablo buys popsicles for his friends. The store sells single popsicles for $\$ 1$ each, 3popsicle boxes for $\$ 2$ each, and 5 -popsicle boxes for $\$ 3$. What is the greatest number of popsicles that Pablo […]

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March 4, 2026
Indian National Mathematical Olympiad 2026

Problem 1. Let $x_1, x_2, x_3, \ldots$ be a sequence of positive integers defined as follows: $x_1=1$ and for each $n \geqslant 1$ we have $$x_{n+1}=x_n+\left\lfloor\sqrt{x_n}\right\rfloor$$ Determine all positive integers $m$ for which $x_n=m^2$ for some $n \geqslant 1$. (Here $\lfloor x\rfloor$ denotes the greatest integer less or equal to $x$ for every real number […]

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March 4, 2026
American Mathematics Competition 8 - 2026

1 What is the value of the following expression? 1+2-3+4+5-6+7+8-9+10+11-12 A. 18 B. 21 C. 24 D. 27 E. 30 Answer - A 2 In the array shown below, three 3 s are surrounded by 2 s, which are in turn surrounded by a border of 1 s . What is the sum of the […]

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February 20, 2026
BANGLADESH PHYSICS OLYMPIAD 2026 (Regional Round - Rajshahi) Category A

1. একটি দণ্ডের দৈর্ঘ্য, 12.30 cm অন্যটির 3.456 cm । মোট দৈর্ঘ্য কত দশমিক স্থান পর্যন্ত লেখা উচিত? (The measurement of a rod is 12.30 cm and another rod is 3.456 cm . Their total length should be recorded as — ) (A) 15.756 cm (B) $\quad 15.76 \mathrm{~cm}$ (C) 15.8 cm (D) 15.75 cm […]

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February 20, 2026
BANGLADESH PHYSICS OLYMPIAD 2026 (Regional Round - Barisal) Category A

1. একজন শিক্ষার্থী $4.56 \times 1.4 \times 2.345$ গুণ করলে ফলাফল কতটি Significant Figure নিয়ে লেখা উচিত? (A student multiplies $4.56 \times 1.4 \times 2.345$. The answer should be expressed with how many significant figures?) (A) 5 (B) 4 (C) 3 (D) 2  2. যদি $g=9.8 \mathrm{~m} / \mathrm{s}^{2}$, তবে $\mathrm{cm} / \mathrm{min}^{2}$ এককে এর […]

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February 20, 2026
BANGLADESH PHYSICS OLYMPIAD 2026 (Regional Round - Dhaka North) Category – A

1. যদি দৈর্ঘ্য, ভর ও সময়ের একক যথাক্রমে $a, b$, ও $c$ গুণ পরিবর্তন করা হয়, তবে শক্তির নতুন একক কী হবে? (If the base units of length, mass, and time are changed to $a$ times, $b$ times, and $c$ times of their original values respectively, what will be the new unit of energy?) (A) […]

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