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JEE Math Practice Question

If three of the six vertices of a regular hexagon are chosen at random, then the probability that the triangle formed with these chosen vertices is equilateral is :

  1. A.$${1 \over {10}}$$
  2. B.$${3 \over {10}}$$
  3. C.$${3 \over {20}}$$
  4. D.$${1 \over {5}}$$

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