Question

Marco needs to make a five letter password, without repeating any letters. How many different passwords could Marco make?

Answer 1

7893600

Explanation:

There are 26 letters

first space has 26 choices

second space has 25 choices because one choice would make it repeating

third has 24 choices

fourth has 23 choices

fifth has 22 choices

multiply them together to get the answer

26*25*24*23*22 is 7893600