Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

The theory is here. It is pretty simple: form any integer bigger or equal that 0 using four fours and symbols.

Is there any demonstration which explains why with four fours is possible to form integers starting from zero? Which would be the maximum (not the maximum integer possible to form with four fours, the maximum integer until all its smaller integers can be formed)?

share|improve this question
add comment

1 Answer 1

up vote 8 down vote accepted

Did you read the article you linked completely? It says: "Paul Bourke credits Ben Rudiak-Gould with this description of how natural logarithms (ln()) can be used to represent any positive integer ''n'' as $n = -\sqrt4\frac{\ln\left[\left(\ln\underbrace{\sqrt{\sqrt{\cdots\sqrt4}}}_{n}\right) / \ln4\right]}{\ln{4}}$."

I presume this answers your questions.

share|improve this answer
    
It actually does. I'd already heard about the puzzle so I just linked it, I didn't read it... i feel so stupid :( –  Diego May 9 '11 at 12:58
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.