Which of the following are valid probability distributions for a discrete random variable

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract