I have a bag with 2 different kinds of objects: 11 cubes, 16 spheres. If I randomly pick from the bag 5 of these objects without return any of it, what is the probability of getting at least 1 of each kind?

Answer 1

it's easy to fin P1(no cubes) or P2(no spheres).

P(some of each) = 1 - (P1+P2)

Answer 2

Could you explain in more detail? I don't understand