JEE Main & Advanced JEE Main Paper (Held On 10-Jan-2019 Morning)

  • question_answer
    Consider the statement: \[''P\left( n \right):{{n}^{2}}-n+41\] is prime?. Then which one of the following is true? [JEE Main Online Paper (Held On 10-Jan-2019 Morning]

    A) P(5) is false but P(3) is true

    B) Both P(3) and P(5) are true

    C) P(3) is false but P(5) is true

    D) Both P(3) and P(5) are false

    Correct Answer: B

    Solution :

    \[P\left( n \right)={{n}^{2}}-n+41\] \[P\left( 5 \right)=25-5+41=61\] \[P\left( 3 \right)=9-3+41=47\] Both true


You need to login to perform this action.
You will be redirected in 3 sec spinner