# Resistor Pyramid

**Electricity and Magnetism**Level 3

Jo has 8 identical resistors with resistance \(r\). He decides to build a *Resistor Pyramid* for his Physics project. Being a curious boy, he tries to find out the equivalent resistance between \(A\) and \(B\) using his ohmmeter. Find the equivalent resistance that the ohmmeter shows up when \(r = 1 \Omega \).

If the resistance can be expressed in the form of \(\dfrac{\alpha}{\beta}\), where \(\alpha\) and \(\beta\) care coprime positive integers, submit your answer as \( \alpha + \beta\).