SOLUTION: How many positive integers less than 25 can be formed by using the digits 1,2,and 3?

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Question 407929: How many positive integers less than 25 can be formed by using the digits 1,2,and 3?
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
How many positive integers less than 25 can be formed by using the digits 1,2,and 3?


You'll have to find out whether you can use them more than once.

If you can, then there are these 9

1, 2, 3, 11, 12, 13, 21, 22, 23

If you can't, then there are only these 7

1, 2, 3, 12, 13, 21, 23

Edwin