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If there are 4 branches, 3 nodes then number of links in a co-tree are?(a) 2(b) 4(c) 6(d) 8The question was asked during an interview for a job.Query is from Tree and Co-Tree topic in division Methods of Analyzing Circuits of Network Theory

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The CORRECT OPTION is (a) 2

The best explanation: NUMBER of links = b-n+1. Given number of branches = 4 and number of nodes = 3. On substituting in the equation, number of links in a co-tree = 4 – 3 + 1 = 2.



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