Question

Two students james and harry appears in an examination. The probability that james will qualify the examination is 0.05 and that harry will qualify the exam os 0.10. The probability that both will qualify the exam is 0.02.The probability only one of them will qualify the exam is

Answer 1

$P\left(3\right)=0.05P\left(4\right)=0.1P(J\cap H)=0.02P(J\cup H)=P\left(J\right)+P\left(H\right)-P(J\cap H)=0.05+0.1-0.02=0.15-0.02=0.13$