Multiple Choice Questions on If N2 minus 33 N2 minus 31 and N2 minus 29 are prime numbers then what is the number of possible val........... for CDS Exam Preparation

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Multiple Choice Questions

If N2 minus 33 N2 minus 31 and N2 minus 29 are prime numbers then what is the number of possible val...........

Quantitative Aptitude (CDS) Number System
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    If N2 − 33 , N2 − 31 and N2 − 29 are prime numbers, then what is the number of possible values of N, where N is an integer?

    1

    Incorrect Answer

    2

    Incorrect Answer

    6

    Correct Answer

    None of these

    Incorrect Answer
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    Explanation:

    From option (c) By Hook and Crook N = 6
    N2 – 33 = 62 – 33 = 36 – 33 = 3, which is prime.
    N2 – 31 = 62 – 31 = 36 – 31 = 5, which is prime.
    N2 – 29 = 62 – 29 = 36 – 29 = 7, which is prime.
    So, N = 6 only possible value

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