Question

let p be a probability function on S={x1,x2,x3} if p(x1) =1/4 and p(x3)=1/3 then p(x2) is equal to ​

Answer 1

p(x2)=(1/4+1/3)÷2

=(3+4/12)÷2

=(7/12)÷2

=7/12×1/2

=7/24