explain pls and thank you

Using historical records, the personnel manager of a plant has determined the probability distribution of X, the number of employees absent per day. X 0 12 5 7 Pr(X) 0.02 0.046 0.116 0.388 0.32 0.077 0.024 0.009 Find the following probabilities. Your answers should be whole numbers or decimals a. Pr(2 5) c. Pr(X