We shall say that an n-digit number is pandigital if it makes use of all the digits 1 to n exactly once. For example, 2143 is a 4-digit pandigital and is also prime. What is the largest n-digit pandigital prime that exists? First puzzle solved using Python Take the number 192 and multiplyLanjutkan membaca “Euler 38 and Euler 41”
What is the length of the shortest pipe, of internal radius 50mm, that can fully contain 21 balls of radii 30mm, 31mm, …, 50mm? Give your answer in micrometres (10-6 m) rounded to the nearest integer. Will you give it a try?