There are 3 books of mathematics, 4 of science, and 5 of literature. How many different collections can be made such that each collection consists of (1)one book of each subject, (2)at least one book of each subject, (3)at least one book of literature.

There are 3 books of mathematics,4 books of Physics and 5 on English.How many different collection can be made such that each collection consist of :

There re three books of physics, four of chemistry and five of mathematics. How many different collections can be made such that each collection consists of (i) one book of each subject (ii) atleast one book of each subject. (iii) atleast one book of mathematics.

How many selection of 4 books can be made from 8 different books?

The number of ways in which 7 different books can be given to 5 students if each can receive none, one or more books is