Smith Number Check
Write a function to check if a number is a Smith number by comparing digit sums of the number and its prime factorization.
Zeller Congruence Weekday
Implement a function that returns the weekday name for a given date using Zeller's congruence.
Extended Euclidean Algorithm
Implement the extended Euclidean algorithm to return (gcd, x, y) such that ax + by = gcd(a, b).
Polynomial Fit Coefficients
Implement a function that returns the coefficients of the best-fit quadratic polynomial for given points.
Multinomial coefficient
Write a function to compute the multinomial coefficient efficiently for given nonnegative counts.
Correlation Coefficient
Write a pure-Python function that computes the Pearson correlation coefficient between two lists of numbers.
Binomial Coefficient
Implement a function to compute binomial coefficients modulo 10^9+7 for n up to 10^5.
Showing 1–7 of 7 challenges · medium · Math & Number Theory
Math & Number Theory — Python coding challenges
What you will find here
This page lists math & number theory challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.
Challenges vs tutorials and quizzes
Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.