What are the three methods used to identify sample spaces ?

venn diagram, counting method and tree diagram.

Step-by-step explanation:

1. Venn diagram:- A venn Diagram is pictorial representation of the relationship betwwen sets.In venn diagram , the sets are represented by oval shape and circles.The elemements of sets are labelled within the circle.For example ,

A set P  is the collection of even numbers between 1 to 10. Then the venn diagram of set P

Where U= Universal set = collection of all numbers from 1 to 10.

2. Counting method :-  in this method simply counting the possible outcomes of any event like as tosses a coin and rolled a dice  etc.

3.Tree diagram :-let a coin tosses then tree given below