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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?

Respuesta :

duanolivia
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
xfusen
25 passwords possible

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