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Three of the six vertices of a regular hexagon are chosen at random . Find the probability that the triangle with three vertices is equilateral .

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Total number of ways of picking 3 vertices = 6C3= 20 
Only two sets of 3 vertices will have an equilateral triangle. 

So probability = 2/20 = 1/10

HOPE THIS HELPS!!!PLS GV THUMBS UP!!!:):P)

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