Monthly Archives: May 2023

Using Ordinary Generating Functions to find sum of squares of first n terms

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How many four digit numbers have one odd and three even digits ?

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Number of Isosceles triangle are there in a regular decagon ?

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Gauss Contest 2021, Question 24 (GCD and LCM)

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Gauss Contest 2021, Question 19 (Sum using digits 1 to 9)

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Gauss Contest 2022, Question 17 (P+Q+R)

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Stars and bars VS Ordinary Generating Functions

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How to think about Plane Equation ?

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Math 1031 May 2019 Q1 b Durham University (Mathematical Induction)

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Recursive formula for a binary sequence that contains at least two zeros

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