Abox contains 20 different balls numbered from 1 to 20 (different balls have different numbers). at each step, we select a ball uniformly at random, record the number on it, and put it back in the box. this experiment is repeated 10 times. find the probability that all the numbers recorded were distinct.

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?