SOLUTION: How many 5-number license plates can be made using the digits 1, 2, 3, 4, 5, 6, 7 if repetitions are allowed? not allowed?
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Question 2224: How many 5-number license plates can be made using the digits 1, 2, 3, 4, 5, 6, 7 if repetitions are allowed? not allowed? Answer by khwang(438) (Show Source):
You can put this solution on YOUR website! If repetitions are allowed:
7^5 = 16807
repetitions are not allowed?
P(7,5) = 7!/2!= 7*6*5*4*3 = 2520
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