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Project Euler Solutions

This category contains 130 posts

Project Euler 1 Solution

Find the sum of all the natural numbers that are multiples of 3 or 5 using the inclusion-exclusion principal.

Project Euler 10 Solution

Calculate the sum of all the primes below two million.

Project Euler 100 Solution

Finding the number of blue discs for which there is 50% chance of taking two blue.

Project Euler 104 Solution

Find Fibonacci numbers for which the first and last nine digits are pandigital.

Project Euler 11 Solution

Find the greatest product of four adjacent numbers in the same direction in a grid.

Project Euler 112 Solution

Investigating the density of “bouncy” numbers.

Project Euler 113 Solution

Count how many numbers below a googol (10**100) are not “bouncy”

Project Euler 119 Solution

Investigating the numbers which are equal to sum of their digits raised to some power.

Project Euler 12 Solution

Find the value of the first triangle number to have over five hundred divisors

Project Euler 120 Solution

Finding the maximum remainder when (a − 1)n + (a + 1)n is divided by a2.