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Q:

A can do a work in 6 days and B can do the same work in 12 days. If A, B and C together can do the same work in 4 days, then in how much days C can do it alone?

  • 1
    18 days
  • 2
    72 days
  • 3
    36 days
  • 4
    None of these
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Answer : 4. "None of these"

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