(i) Impossible Event:
The empty set is called Impossible Event.
(ii) Sure Event:
The whole sample space is called the Sure Event.
(iii) Simple Event
If an event has only one sample point of a sample space, it is called a Simple (or Elementary) event.
Tossing two coins, a sample space is:
(iv) Compound Event:
If an event has more than one sample point, it is called a Compound event.
“Tossing a Coin twice”, the events
: ‘exactly one head appeared.’
: ‘at least one head appeared.’
: ‘Almost one head appeared’.
Above all events are compound events and the subset of whole sample space .
Each of the above events contains more than one sample point.