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How many 5-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7 if repetition of digits is not allowed?

How many 5-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7 if repetition of digits is not allowed?
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How many 5-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7 if repetition of digits is not allowed?

asked
User Olivie
by
8.2k points

1 Answer

1 vote

Answer:

2,520

Step-by-step explanation:

nPr=n!/(n-r)!

7P5=7!/2!=2,520

Hope this helped

answered
User Derek Redfern
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7.9k points
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