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# Event

Event Example 1
When you throw an unbiased dice with one of the number 1 - 6 on each side, read the number on top and answer the fallowing questions.
Question (1). Which numbers are probablely on top?
Question (2). Is the number on top will be 0?
Question (3). Is the number on top less than 7?
Question (4). Is the number on top will be 5?
Solution
You could repeat do this experimentation many times and find,
Answers (1). Each trial the number on top may not the same. It is possible that one of the number 1 - 6 will be on top on each trial. All possible outcomes is 6 times, but we can not predict which number will be on top before each trial.
Answers (2). The number on top is absolutely not 0.
Answers (3). The number on top is certain less than 7.
Answers (4). The number on top may be 5, but may not be 5, which can not predicted.
Impossible Event
The event will never occur. Question (2) is an impossible event.
Certain Event
The event must happen. Question (3) is a certain event.
Random Event
The event may or may not occur, which can not predicted. Question (4) is a random event.
Event Example 2
In the following event, indicates which one is impossible event? which one is certain event? which one is a random event?
(A). Throw a fair coin once, its head is up.
(B). Water will freeze at zero degree C.
(C). Water in Atlantic Ocean will dry up next year.
(D). There is always champion in tennis tournament.
(C) is an impossible event since water in Atlantic Ocean is always there.
(B) and (D) are certain event since (B) and (D) are true statements.
(A) is a random event since throw a fair coin once, its head may up, or its tail may up, which can not predicted.
Event Example 3
here are one goldfish and 99 blackfishes with the same size in a pond. Bob and John go to fishing in the pond. If John get one fish, which one of the following statements is true?
(A). It is not a goldfish.
(B). It is certain a blackfish.
(C). It is may be a goldfish.
(D). It is may be a redfish.