Page 6 - Digi notes maths
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Examples
1) When a coin is tossed; = {, }
2) When two coins are tossed simultaneously; =
{, , , }
3) When a dice is rolled; = {, , , , , }
Event:
The set of favourable number of outcomes of a random
experiment is known as event.
Probability of Occurrence of an Event:
Let S be the sample space and E be the event
Then
()
( ) = =
()
Note:
1) () =
2) ≤ () ≤
3) () = →
4) () = →
̅
5) () + () =
Page 6 of 20
www.mahendraguru.com
Examples
1) When a coin is tossed; = {, }
2) When two coins are tossed simultaneously; =
{, , , }
3) When a dice is rolled; = {, , , , , }
Event:
The set of favourable number of outcomes of a random
experiment is known as event.
Probability of Occurrence of an Event:
Let S be the sample space and E be the event
Then
()
( ) = =
()
Note:
1) () =
2) ≤ () ≤
3) () = →
4) () = →
̅
5) () + () =
Page 6 of 20
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