Difference between multitasking, multithreading and multiprocessing?

Question

Whats the difference between multitasking, multiprogramming & multiprocessing

This comes regularly for my university OS exams and I can\'t find a good answer. I

Answer 1

Multiprograming

Running more then one program with in an application to perform a certain task.

Example : In MS WORD, Writing in document and sending Email

Multitasking

Running more then one application to perform a certain task.

Example: listening Song, playing game, work in ms word, excel and other applications simultaneously

Multiprocessing

Running more then one instruction through a processor.

Example When create a file then computer takes Time and date default.