Category Archives: Trick

Spotting difference in squares

Posted on June 15, 2024 by Sumant Sumant

Simplify

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Pascal contest question 24 2017

Posted on February 28, 2024 by Sumant Sumant
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AoPS Ant problem

Posted on February 28, 2024 by Sumant Sumant

An ant starts at one vertex of a unit cube and walks to the opposite vertex along the surface of the cube. What is the minimum distance the ant can walk?

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Solve this square root without Calculator

Posted on August 28, 2023 by Sumant Sumant

Solve without calculator

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Perimeter of an irregular figure

Posted on August 28, 2023 by Sumant Sumant
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Traditional Light Bulb and 3 Switches

Posted on July 7, 2023 by Sumant Sumant
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IB HL Trigonometry (Double Angle Identities)

Posted on May 29, 2023 by Sumant Sumant
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Multiplying by 999999999

Posted on May 23, 2023 by Sumant Sumant
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Ingenious mathematical problems and methods by L.A.Graham

Posted on June 26, 2022 by Sumant Sumant

I started reading this book in 2011 when i went to Ranchi with my mom. It’s a collection of problems. My favorite is still the “Truck in the desert” problem. 2. Largest product 28. Euclid’s put put problem 81. Old … Continue reading →

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4 different ways to evaluate definite integral of reciprocal of sqrt(1+x^2) between 0 and 1

Posted on April 15, 2022 by Sumant Sumant
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