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This one can be solved with a series of wye-to-delta and delta-to-wye transformations. I haven't actually crunched the numbers, but below are the transformations I would use. Note that the color coding is just to show the changes from one step to another. Legs of the same color don't necessarily have the same resistance.

@Steven Chase sir i got the answer using this delta star one , but it gets complicated after each time we apply . Btw i have a hint which came with the problem , can i post ? then can u try by that method ?

@Steven Chase
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@Steven Chase sir this was the hint : [img]https://i.postimg.cc/h4sWCmh5/23047a35975b524cd8674eeb5c6aa41b50d0f989-1-690x383.png[/img] i am not getting how they got AB as symmetry line. I cannt think that AB is symmtry line

@Kudo Shinichi
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@Steven Chase sir should i post that image in the actual problem as such i am not getting any option to let it be posted in comment section ? ( As such i have mentioned the link above , can u copy paste it Sir ? U will get the image )

@Kudo Shinichi
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I generally just start a new dummy problem or note, upload a picture to that, paste it into here, and then cancel the dummy problem. It's cumbersome, but it works.

@Steven Chase sir , how to do this problem as such i am mot getting any symmtry line also not any equipotential points here . ( Maybe there are equipotential points ) Btw answer is suppose to be 2 , Can u try this one ?

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This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

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TopNewestThis one can be solved with a series of wye-to-delta and delta-to-wye transformations. I haven't actually crunched the numbers, but below are the transformations I would use. Note that the color coding is just to show the changes from one step to another. Legs of the same color don't necessarily have the same resistance.

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@Steven Chase sir i got the answer using this delta star one , but it gets complicated after each time we apply . Btw i have a hint which came with the problem , can i post ? then can u try by that method ?

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Actually i am not able to catch that hint .

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@Steven Chase sir this was the hint : [img]https://i.postimg.cc/h4sWCmh5/23047a35975b524cd8674eeb5c6aa41b50d0f989-1-690x383.png[/img] i am not getting how they got AB as symmetry line. I cannt think that AB is symmtry line

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@Steven Chase sir should i post that image in the actual problem as such i am not getting any option to let it be posted in comment section ? ( As such i have mentioned the link above , can u copy paste it Sir ? U will get the image )

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@Steven Chase sir this was the hint

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@Steven Chase sir , how to do this problem as such i am mot getting any symmtry line also not any equipotential points here . ( Maybe there are equipotential points ) Btw answer is suppose to be 2 , Can u try this one ?

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