In an Experiment with Four Outcomes, P, Q, R, and S

Essay

In an experiment with four outcomes, P, Q, R, and S, the probability of P is $\frac { 1 } { 3 }$ , the probability of Q is $\frac { 1 } { 2 }$ , and the probabilities of R and S are equal to each other. What is the probability of S?
A) $\frac { 1 } { 12 }$

B) $\frac { 1 } { 6 }$

C) $\frac { 3 } { 10 }$

D) $\frac { 5 } { 6 }$