What are the three methods used to identify sample spaces ?
2 answers:
Answer:
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
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Answer:
51
Step-by-step explanation:
A = Surface area of the Earth =
Total number of people on Earth = 7.594 billion as of 2018 =
We need to find the number of people living in each square km of land area.
So, we need to divide the number of people by the land area of the Earth.
So, 51 people will inhabit each square km of land area.