Hans is choosing a 2 - letter password from the letters A, B, C, D, and E. The password cannot have the same letter repeated in it. How many such passwords are possible?

Question

Mathematics

Francisco Saunders

28 December, 23:54

Hans is choosing a 2 - letter password from the letters A, B, C, D, and E. The password cannot have the same letter repeated in it. How many such passwords are possible?

+5

Answers (2)

Know the Answer?

Carlee Lucero · Answer 1

Carlee Lucero 29 December, 00:33

0

25 passwords possible

Brock Harrington · Answer 2

There are 5 letters

there are 5 possibilities for the first letter, and 4 possibilities for the second letter after the first letter is used up

so 5 * 4 = 20 possibilities