Eureka post the complete question:
6 Answers
Philip Calvert
·2009-10-01 00:25:44
Assuming the question :P
the answer :
R_{AB}=\frac{\sqrt{7}-1}{3}a\rho
'a' is the side of the largest Δ and Ï the resistance per unit length
msp
·2009-10-01 00:36:29
see eure i can give u a hint .The current distribution doesnt change if the terminals are interchanged.So u can apply connection removal method.
iitimcomin
·2009-10-01 04:39:59
http://www.targetiit.com/iit-jee-forum/posts/resistance-9754.html
a slightly better version of the question