Multiple Choice Questions on Which of the following sets are equal A x x2 4x 3 0 B x x2 3x 2 0 C x x N x lt 3 ........ for NDA Exam Preparation

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Multiple Choice Questions

Which of the following sets are equal A x x2 4x 3 0 B x x2 3x 2 0 C x x N x lt 3 ........

Mathematics (NDA) Set theory
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    Which of the following sets are equal?

    A={x:x2 -4x+3=0}

    B={x:x2 -3x+2=0}

    C={x:x ?N ,x<3}

    B and C

    Correct Answer

    A and C

    Incorrect Answer

    A =B=C

    Incorrect Answer

    None of these

    Incorrect Answer
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    Explanation:

    A={x:x2 -4x+3=0}

    x2 -4x+3=0

    (x-3)(x-1)=0

    X=1

    X=3

    x2 -3x+2=0

    (x-2)(x-1)=0

    X=2

    X=1

    x ?N ,x<3

    x<3

    x=1 and 2

    By: bhavesh kumar singh
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