14.Probability
easy

ત્રણ સિક્કા એકવાર ઉછાળવામાં આવે છે. નીચેની ઘટનાઓનું વર્ણન કરો :

પરસ્પર નિવારક હોય પણ નિઃશેષ ન હોય તેવી ત્રણ ઘટનાઓ 

Option A
Option B
Option C
Option D

Solution

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 $A \cup B \cup C \neq S$

Standard 11
Mathematics

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