thirty animals are to be used in a medical experiment on diet deficiency: 3 male and 7 female rhesus monkeys, 6 male and 8 female dogs. If one animal is selected at random, what is the probability of getting a chimpanzee or a dog?

Answer 1

Of the 30 animals, (3+7)+(6+8)=24 are rhesus monkey or dog.

No idea how many chimps there are.