Three coins are tossed. Describe Two events which are mutually exclusive but not exhaustive.
Three coins are tossed. Describe Two events which are mutually exclusive but not exhaustive.
When three coins are tossed, the sample space is given by
$S =\{ HHH , \,HHT , \,HTH ,\, HTT , \,THH , \,THT , \,TTH , \,TTT \}$
Two events which are mutually exclusive but not exhaustive can be
$A:$ getting exactly one head
$B:$ getting exactly one tail
i.e.. $A=\{H T T, \,T H T, \,T T H\}$
$B =\{ HHT ,\, HTH , \,THH \}$
This is because $A \cap B=\phi,$ but $A \cup B \neq S$
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- [AIEEE 2003]
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