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Manipal Engineering Manipal Engineering Solved Paper-2013

  • question_answer
    \[a,\,\,b,\,\,c\]are prime numbers,\[x\]is an even number,\[y\]is an odd number. Which of the following is/are never true? I.\[a+x=b\]                         II.\[b+y=c\]                        III.\[ab=c\]                          IV.\[a+b=c\]

    A)  I and II

    B)  II and III

    C)  Only III

    D)  III and IV

    Correct Answer: C

    Solution :

    Since,\[c\]is a prime number so it can have only two factors\[1\]and\[c\].\[ab=c\]gives two more factors of\[c\]as\[a\]and\[b\], which is not possible.


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