Probability Question 279

Question: 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

Options:

A) 18/595

B) 6/17

C) 3/10

D) 2/7

Show Answer

Answer:

Correct Answer: A

Solution:

The ratios of the ships A, B, and C for arriving safely are 2:5, 3:7, and 6:11, respectively. Therefore, the probability of ship A for arriving safely is 2/(2+5)=2/7. Similarly, for B the probability is 3/(3+7)=3/10 and for C the probability is C=6/(6+11)=6/17. Therefore, the probability of all the ships for arriving safely is $ (2/4)\times (3/10)\times (6/17)=18/595. $