The digits 1-5 are used for a set of locker codes. Suppose the digits cannot repeat. Find the number of possible two digit and three digit codes. Describe any pattern and use it to predict the number of possible five digit codes.

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2 August, 15:42

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Kaliyah Morris · Answer 1

So you would do

5*4*3 = 60

and

5*4=20

so, for a 3 digit code there are 60 possibilities and for a 2 digit code there are 20 possibilities.