Some human white blood cells help destroy pathogenic bacteria by a. causing mutations in the bacteria
b. engulfing and digesting the bacteria
c. producing toxins that compete with bacterial toxins
d. inserting part of their DNA into the bacterial cells

Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.