# Tag Archives: factorial

Given two positive integers B and N. The task is to find the number of trailing zeroes in b-ary (base B) representation of N! (factorial… Read More
Given an integer N, the task is to find the number of trailing zeroes in the base 16 representation of the factorial of N. Examples: … Read More
Given three positive integers N, A, and B. The task is to count the numbers of length N containing only digits A and B and… Read More
Given a positive integer N, the task is to check if N is a Factorial prime or not. If it is a factorial prime then… Read More
Given an array arr[] of N integers and number of queries Q. The task is to answer three types of queries. Update [l, r] –… Read More
Given a string str which represents an integer, the task is to find the largest number without any leading or trailing zeros or ones whose… Read More
Given a string ‘S’ containing vowels and consonants of lowercase English alphabets. The task is to find the number of ways in which the characters… Read More
Given a word containing vowels and consonants. The task is to find that in how many ways the word can be arranged so that the… Read More
Given two integers and . The task is to find the maximum value of x, such that, n! % (k^x) = 0. Examples:  Input : n =… Read More
Given a string ‘s’ and a character ‘c’, the task is to find the number of permutations of the string in which all the occurrences… Read More
Given 2n girls and randomly divided into two subgroups each containing n girls. The task is to count the number of ways in which groups… Read More
Given a word of length less than 10, the task is to find a number of ways in which it can be arranged without changing… Read More
There are n boys and n (n < 10) girls are to be seated around a round table, in a circle. The task is to… Read More
Given a number N, the task is to find the unit and tens places digit of the first N natural numbers factorials, i.e last two… Read More
Given a number N, the task is to find units place digit of the first N natural numbers factorials, i.e. 1!+2!+3!+….N! where N<=10e18.Examples:   Input: n… Read More