Jill needs to make a password for her email account. The password must be all digits and contain exactly six characters. How many passwords are possible if numbers can only be used once? Show your work and explain your answer.

If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba…

The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.