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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?

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?
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5 votes
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?

asked
User Va Visal
by
7.5k points

2 Answers

0 votes
25 passwords possible
answered
User Corycorycory
by
8.3k points
4 votes
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
answered
User Wakana
by
7.6k points
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