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ABCDEFGH is an octagon. Two vertices of the octagon are selected at random. Find the probability that these vertices form a diagonal of the octagon.
A. \(\dfrac17\)
B. \(\dfrac27\)
C. \(\dfrac37\)
D. \(\dfrac47\)
E. \(\dfrac57\)
Answer: E
Source: e-GMAT
A. \(\dfrac17\)
B. \(\dfrac27\)
C. \(\dfrac37\)
D. \(\dfrac47\)
E. \(\dfrac57\)
Answer: E
Source: e-GMAT