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