Monday, December 12, 2011

Been A While Since I Did Some Statistics

How many 2 digit numbers can you make using the digits 1, 2, 3 and 4 without repeating the digits?

1. I come up with 12, but I am sure that is too simple.

2. Agreed -- 12 seems the obvious answer, but it seems perhaps too much so...

I guess, if you looked at it the right way, you might say you could only make two 2-digit numbers with the digits 1-4 (repeating no digits)--since in forming a third number you'd have to use a digit utilized in one of the first two...

3. answer for this question is 12,34

4. You guys make things so complicated! I wish I had been doing so, just to prove I can keep up with you. But no, I was going for the straightforward answer of 12. 4 choices for the first digit and only 3 for the second.

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