12th Class Mathematics Relations and Functions Question Bank Case Based (MCQs) - Relations and Functions

  • question_answer
    Directions : (1-5)
    A general election of Lok Sabha is a gigantic exercise. About 911 million people were eligible to vote and voter turnout was about 67% the highest ever.
    Let I be the set of all citizens of India who were eligible to exercise their voting right in general election held in 2019. A relation 'R' is defined on I as follows :
    \[R=\left\{ \left( {{V}_{1}},\,{{V}_{2}} \right) \right.\,:\,{{V}_{1}},\,{{V}_{2}}\,\in \,\,I\]and both use their voting right in general election-2019}
    Two neighbours X and \[Y\in I\]. X exercised his voting right while Y did not caste her vote in general election-2019. Which of the following is true ?

    A) \[\left( X,\,Y \right)\in R\]

    B) \[\left( Y,\,X \right)\in R\]

    C) \[\left( X,\,X \right)\,\notin R\]

    D) \[\left( X,\,Y \right)\,\notin R\]

    Correct Answer: D

    Solution :

    Since X cast his vote but Y did not. \[\therefore \,\,\left( X,\,\,Y \right)\notin R\]


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