4. Find the number of ways 6 large books, 5 medium-size books, and 3small books can be placed on a shelf where: (a) there are no restrictions (b) all books of the same size are together

there are 18 people from the mathematics department and 325 people from the computer science department in a collegea. how many ways are there to get two representatives?so that one person is from the mathematics department and the other is from the computer science department?b. how many ways are there to get one elected representative, from a combination of the two majors?

From a club of 19 ​people, in how many ways can a group of four members be selected to attend a​ conference?

A basket contains 2 pink, 3 yellow, 8 red, and 1 black jelly beans. You grab a handful of 4 jelly beans. (a) How many groups of 4 jelly beans include exactly 1 of each color?   (b) How many groups of 4 jelly beans include at most 1 yellow?

A candy company packages it's boxes of chocolates in the following way:  24 candies= 1 box  12 boxes= 1 flat  12 flates = 1 crate  a. how many boxes are in four crates?  b. how many candies are in three crates?  c. how many candies are in two crates,three flats, and one box?  d. how would 14,832 candies be packaged?