Three ships $A, B$ and $C$ 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
Three ships $A, B$ and $C$ 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
$\frac{{18}}{{595}}$
- B
$\frac{6}{{17}}$
- C
$\frac{3}{{10}}$
- D
$\frac{2}{7}$
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