Question: Let A = {1,2, 3, 4} and R = {(1,2), (2,3)(3, 4), (2,1)}. The number of edges in the transitive closure of R is

Let A = {1,2, 3, 4} and R = {(1,2), (2,3)(3, 4), 

Let A = {1,2, 3, 4} and R = {(1,2), (2,3)(3, 4), (2,1)}. The number of edges in the transitive closure of R is O a. 9 O b. None O c.5 O d.4 O e. 16

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