Answer to Question #235762 in Statistics and Probability for gajen

Question

There are 200 boxes with tablets on the shelf. 150 boxes are with oxitocin, 30 boxes with analgin,

10 boxes with baralgin and 10 boxes with the papaverini hydrochloride. Find out the probability

that one box taken from the shelf at random will be with oxitocine or analgin

Answer 1

$$P(oxitocine\ or\ analgin)=\dfrac{150+30}{200}=0.9$$