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ICSE Class X Math 2014 Paper

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A die has 6 faces marked by the given numbers as shown below :
The die is thrown once. What is the probability of getting
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Question : 3 of 52
Marks: +1, -0
a positive integer.
Solution:  
No. of sample space n(S)=6n(S)=6
a positive integer ={1,2,3}=\{1,2,3\}
No. of favourables n(E)=3n(E)=3
∴    \therefore \;\; Probability =  n(E)n(S)=  36=  12=\;\frac{n(E)}{n(S)}=\;\frac{3}{6}=\;\frac{1}{2}
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