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  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2005

  • question_answer
    If \[{{N}_{a}}=\{an:n\in N\},\]then\[{{N}_{5}}\cap {{N}_{7}}\]is equal to:

    A)  \[{{N}_{7}}\]                                    

    B)  \[N\]

    C)  \[{{N}_{35}}\]                  

    D)         \[{{N}_{5}}\]

    E)  \[{{N}_{12}}\]

    Correct Answer: C

    Solution :

    \[\because \] \[{{N}_{5}}=(5,10,15,20,25,30,35,...)\] and \[{{N}_{7}}=\{7,14,21,35,...\}\] \[\therefore \]\[{{N}_{5}}\cap {{N}_{7}}=\{35,70,.....\}={{N}_{35}}\]


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