10th Class Mathematics Probability Question Bank Probability

  • question_answer
    Find the probability of getting a number greater than 2 or an even number in a single throw of a fair die.

    A)  \[\frac{1}{3}\]                                  

    B)  \[\frac{2}{3}\]

    C)  \[\frac{5}{6}\]                  

    D)         \[\frac{3}{5}\]

    Correct Answer: C

    Solution :

     \[\text{E}=\text{ }\!\!\{\!\!\text{ 2},\text{ 3},\text{ 4},\text{ 5},\text{ 6}\}\,\,\Rightarrow \text{ n(E)}=\text{5}\] \[\text{S}=\text{ }\!\!\{\!\!\text{ 1},\text{ 2},\text{ 3},\text{ 4},\text{ 5},\text{ 6}\}\text{ }\Rightarrow \text{ n(S)}=\text{6}\] \[\therefore \]\[p(E)=\frac{n(E)}{n(S)}=\frac{5}{6}\]


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