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Three ships A ,B ,a n dC sail from Engl...

Three ships `A ,B ,a n dC` sail from England to India. If the ratio of their arriving safely are 2:5, 3:7, and 6:11, respectively, then the probability of all the ships for arriving safely is a.`18/595` b. `6/17` c. `3/10` d. `2/7`

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