Three persons P, Q and R independently try to hit a target. I the probabilities of their hitting the target are 3/4,1/2 and 5/8 respectively, then the probability that the target is hit by P or Q but not by R is:

Statistics and Probability: JEE Main 2017 Mathematics question

JEE Main 2017 · 8 Apr, Morning shift · Q4904

JEE Main 20178 Apr, Morning shiftMathematicsHardStatistics and Probability258× since 2002

Three persons P, Q and R independently try to hit a target. I the probabilities of their hitting the target are

{3 \over 4},{1 \over 2}

and

{5 \over 8}

respectively, then the probability that the target is hit by P or Q but not by R is :

JEE Main 2017 · 8 Apr, Morning shift · Q4904

JEE Main 20178 Apr, Morning shiftMathematicsHardStatistics and Probability258× since 2002

Three persons P, Q and R independently try to hit a target. I the probabilities of their hitting the target are

{3 \over 4},{1 \over 2}

and

{5 \over 8}

respectively, then the probability that the target is hit by P or Q but not by R is :