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Q:

The probabilities of solving a problem by three students A, B and C are  $$3\over 7$$, $$5\over 9$$ and $$1\over 5$$ respectively. The probability that problem will be solved is:

  • 1
    $$155\over 315$$
  • 2
    $$64\over 315$$
  • 3
    $$251\over 315$$
  • 4
    $$32\over 315$$
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Answer : 3. "$$251\over 315$$"

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