10th Class Mathematics Probability Question Bank Probability

  • question_answer
    OA card is drawn from a packet of 100 cards numbered 1 to 100. Find the probability of drawing a number which is a square.

    A)  \[\frac{1}{10}\]               

    B)         \[\frac{9}{100}\]

    C)  \[\frac{1}{100}\]                             

    D)         \[\frac{2}{100}\]

    Correct Answer: A

    Solution :

     \[\text{E }=\{\text{1},\text{4},\text{9},\text{16},\text{25},\text{36},\text{49},\text{64},\text{81},\text{1}00\}\] \[\text{n(E)=1}0\] \[\text{S}=\{\text{1},\text{ 2},\text{ 3},\text{ }......\text{ 1}00\}\text{ }\Rightarrow \text{ n(S)}=\text{1}00\] \[\therefore \]\[p(E)=\frac{n(E)}{n(S)}=\frac{10}{100}=\frac{1}{10}\]


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