Remainders (Part-5)
Remainders: Part-5 In this article we will discuss calculating remainders that involve hefty mathematical expressions. We will discuss each and every mathematical expression one by one. Suppose we have two numbers “a” and “b”. If “a” is in form of 7n +4 and “b” is in...Remainders (Part-4)
Remainders: Part-4 In this article, for calculating remainders we will use concept of cyclicity. Let’s take an example of questions based on concept of remainders. Example Find the remainder when 47123 is divided by 7? Solution: We will do this question step by step...Remainders (Part-3)
Remainders: Part-3 Problem Type 1: What will be the remainder when p + q +r +… is divided by d Example What will be the remainder when 63 + 67 +81 is divided by 11 ? Solution: Instead we add up all numbers, lets do it separately 63 when divided by 11 gives 5 as...Extra Problems for ‘Number of Zeros’ Question Type
Extra Problems for ‘Number of Zeros’ Question Type Example 1: Find the number of zeros in 2145 x 5234 . Solution:When we see the question it looks like a very difficult question but this type of question involving number of zeros is very simple and can be solved in...Highest Power of a prime in a factorial
Type : Highest power of p which divides the q! ,where p is not a prime number The approach for this type is same as that for calculating maximum power of prime in any factorial buthere first we will break p into product of primes. Lets take an example to understand...
