I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!

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?

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...

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

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

ReplyDeleteI 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...

answer for this question is 12,34

ReplyDeleteYou 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.

ReplyDelete