A box contains two defective Christmas tree lights that have been inadvertently mixed with eleven nondefective lights. If the lights are selected one at a time without replacement and tested until both defective lights are found, what is the probability that both defective lights will be found after three trials? Give your answer in fraction form.

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The Answer of A box contains two defective Christmas tree lights that have been inadvertently mixed with eleven nondefective lights. If the lights are selected one at a time without replacement and tested until both defective lights are found, what is the probability that both defective lights will be found after three trials? Give your answer in fraction form.

A Box Contains Two Defective Christmas Tree Lights That Have