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## Homework Statement

Image: http://puu.sh/1ejYb [Broken]

http://puu.sh/1ejYb [Broken]

## Homework Equations

Req of n resistors in series = R1 + R2 + ... + Rn

Req of n resistors in parallel = 1/R1 + 1/R2 + ... + 1/Rn

## The Attempt at a Solution

The answer is supposed to be 10 ohms. However, I don't know how they got that.

What I was thinking that some of the resistors short circuit and the current does not pass through them. So, it would be like: 3 ohms, then 6 ohms and finally 5 ohms. However, that adds up to 14 ohms and also I'm very sure that's wrong.

Thanks a lot!

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