How many numbers with no more than three digits can be formed using only the digits 1 through 7 with no digit used more than once in a given number?

How many numbers with no more than three digits can be formed using on

1.	How many numbers with no more than three digits can be formed using only the digits 1 through 7 with no digit used more than once in a given number?
A.	259
B.	249
C.	257
D.	252
Answer» B. 249

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How many numbers with no more than three digits can be formed using only the digits 1 through 7 with no digit used more than once in a given number?

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