Answer:
Probability of randomly selecting a tree or an insect = 3/5
Step-by-step explanation:
Total number of flashcards, n(Total) = 30
Number of insects, n(Insects) = 10
Number of trees, n(Trees) = 8
Probability of randomly selecting a tree, P(tree) = 8/30
Probability of randomly selecting an insect, P(insect) = 10/30
Probability of randomly selecting a tree or an insect = P(tree) + P(insect)
Probability of randomly selecting a tree or an insect = 8/30 + 10/30
Probability of randomly selecting a tree or an insect = 18/30
Probability of randomly selecting a tree or an insect = 3/5