How do i calculate the effective resistance of the following circuit?

Question

anonymous · Answer

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Each circle within the circuit is of equal resistance,R. The smaller circles at the end point are just the ends of the circuit.

anonymous · Answer

@tiaph go to this link http://www.kss.sd23.bc.ca/chalmers/robotics10/para/page3.html

anonymous · Answer

remember "wheet stone bridge " ....
.. if
  R1/R2   = R3/R4 ..
..
then bridge in-between two side is A JUNK its just to make Question  look as a difficult

anonymous · Answer

@Master.RohanChakraborty that doesn't help much. coz we can't directly apply the formula here. this is how i re-drew the diag:
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